什么是冬眠？
What is hibernation?
冬眠不是普通的睡觉，而是被主动调低的生理状态：体温设定点下调，心率、呼吸和代谢大幅减速，体温能落到接近环境温度，烧的是入秋前囤下的脂肪。它也不是一觉到春天，中间会周期性短暂醒转，每次醒转都要花掉可观的能量。容易混的是那些每天只降代谢一小段的小型动物，机制相同但持续时间短，一般不叫冬眠。
Hibernation is not ordinary sleep but a deliberately lowered physiological state: the body's temperature set point drops, heart rate, breathing and metabolism slow sharply, body temperature can fall close to ambient, and the fuel is fat stored before autumn. Nor is it one unbroken sleep until spring—animals briefly arouse now and then, and each arousal burns a substantial amount of energy. The confusing neighbor is the small animal that cuts its metabolism for a short spell each day: same mechanism, much shorter bout, so it is not usually called hibernation.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#冬眠 #代谢 #能量
候鸟迁徙来回上万公里，它们靠什么认路？
Migratory birds travel tens of thousands of kilometers round trip. How do they navigate?
候鸟是“多传感器导航系统”。白天它们用太阳的位置和体内生物钟推算方向，夜晚用星座（尤其是北极星附近）导航，还能感知地磁场：眼睛中的隐花色素蛋白可能通过自由基对机制把磁场方向转化为视觉信号，头部、鼻腔也有磁感应结构。此外河流、山脉、海岸线等地理标志和自身记忆也会参与。不同物种侧重不同线索，幼鸟第一年常靠遗传的本能方向飞行，随后在经验中逐步完善路线。
Migratory birds are multi-sensor navigation systems. By day they steer by the sun's position and their internal clock; by night they use star patterns, especially around Polaris; and they sense Earth's magnetic field, with cryptochrome proteins in the eye possibly converting field direction into a visual signal via a radical-pair mechanism, while structures in the head and nasal area also respond to magnetism. Landmarks such as rivers, mountains and coastlines plus learned memory join in. Different species rely on different cues; first-year birds often fly an inherited compass bearing and refine the route through experience.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Science（鸟类磁感应综述）
Science (avian magnetoreception review)
#候鸟迁徙 #磁感应 #生物钟
章鱼、鱿鱼等头足类动物是如何在不到一秒内改变体色伪装的？
How do cephalopods such as octopus and squid change color and camouflage in under a second?
头足类皮肤布满色素细胞、虹彩细胞和乳头状突起，由神经系统直接控制，可在不到一秒内扩张或收缩色素囊、改变反光与纹理以匹配背景。它们甚至能透过皮肤感光，实现极快的伪装。
Cephalopod skin is packed with chromatophores, iridophores, and papillae controlled directly by the nervous system, letting them expand or contract pigment sacs and alter reflection and texture in under a second to match the background. They can even sense light through the skin, enabling remarkably fast camouflage.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Hanlon 与 Messenger，《头足类行为》（第2版，剑桥大学出版社，2018）
Hanlon & Messenger, Cephalopod Behaviour (2nd ed., Cambridge University Press, 2018)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL6617934W：Cambridge University Pr
#头足类 #色素细胞 #伪装 #变色
什么是共生关系？举例说明。
What is symbiosis? Give an example.
共生指两个不同物种长期而密切地生活在一起。小丑鱼与海葵是典型：海葵触手的刺细胞一般蜇不到它，通常归因于鱼体表黏液的保护，鱼因此躲开天敌，它的残渣与排泄物又为海葵补上氮素。要分清共生并不等于互利，按双方利弊它分为互利、共栖与寄生，寄生同样算共生；一对关系的性质还会随环境在互利与寄生之间滑动，判断要看双方存活与繁殖是否真的都受益。
Symbiosis is a long-term, close association between members of two different species. Clownfish and sea anemones are typical: the stinging cells of the anemone's tentacles generally fail to fire on the clownfish, usually credited to the protective mucus on its skin, so the fish escapes predators, while its scraps and wastes supply the anemone with nitrogen. Note that symbiosis is not the same as mutual benefit - sorted by who gains and who loses it covers mutualism, commensalism and parasitism, and parasitism is still symbiosis; and a given relationship can slide between mutualism and parasitism as conditions change, so the test is whether survival and reproduction really improve for both.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#共生 #互利 #关系
帝王蝶如何跨越数千公里、准确飞到同一片越冬地？
How do monarch butterflies migrate thousands of kilometers to the same overwintering site?
帝王蝶凭借"太阳罗盘"（按太阳位置结合体内生物钟校正方向）和感光的磁罗盘（隐花色素感知地磁场）双重导航，跨代接力飞行数千公里，仍准确抵达墨西哥同一片冷杉林越冬。这是昆虫导航的奇迹。
Monarch butterflies navigate with a time-compensated sun compass plus a light-sensitive magnetic compass (based on cryptochrome) that senses Earth's field, letting them migrate thousands of kilometers across generations to the very same fir forests in Mexico. It is a marvel of insect navigation.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
Guerra、Gegear 与 Reppert，《磁罗盘辅助帝王蝶迁飞》，《自然·通讯》2014年
Guerra, Gegear & Reppert, "A magnetic compass aids monarch butterfly migration," Nature Communications (2014)
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1038/ncomms5164：A magnetic compass aids m
#帝王蝶 #迁飞 #磁罗盘 #生物钟
什么是迁徙？为什么动物要迁徙？
What is migration, and why do animals do it?
迁徙是动物随季节大规模移动，通常为了寻找食物、避开严寒或到达繁殖地，如候鸟和角马。
Migration is the seasonal long-distance movement of animals to find food, escape cold, or reach breeding grounds, as in birds and wildebeest.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#迁徙 #季节 #繁殖
节肢动物的外骨骼限制了生长，它们是如何通过激素调控完成蜕皮的？
The arthropod exoskeleton constrains growth, so how is molting controlled by hormones?
节肢动物必须周期性蜕皮才能长大：脑神经分泌细胞分泌促前胸腺激素（PTTH），刺激前胸腺合成并释放蜕皮激素（蜕皮酮ecdysone），启动旧皮溶解、新皮形成和蜕出。蜕皮结果由保幼激素（JH）决定：JH水平高时蜕皮后仍保持幼虫形态，JH下降后蜕皮进入蛹期，最终在JH近乎消失时羽化为成虫。
Arthropods must molt periodically to grow. Neurosecretory cells of the brain release prothoracicotropic hormone (PTTH), which stimulates the prothoracic gland to produce and release the molting hormone ecdysone, triggering dissolution of the old cuticle and formation of a new one. The outcome of each molt is set by juvenile hormone (JH): high JH keeps the animal in a larval form after molting, declining JH allows molting into the pupa, and when JH is nearly absent the adult emerges.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《动物学》(刘凌云、郑光美) 昆虫纲
Zoology (Liu Lingyun & Zheng Guangmei), insect physiology
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#蜕皮 #蜕皮激素 #保幼激素
什么是拟态？举一个例子。
What is mimicry? Give an example.
拟态是一种生物模仿另一种生物或环境以获得保护，例如无毒的食蚜蝇长得像有毒的蜜蜂以吓退天敌。
Mimicry is when one species imitates another or the environment for protection, e.g. harmless hoverflies resemble stinging bees to deter predators.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#拟态 #保护 #模仿
沙丁鱼群为什么会像“一个整体”一样突然集体转向？
Why does a school of sardines suddenly turn all at once, moving like a single organism?
鱼群没有指挥官，转向是“自组织”涌现出的集体行为。每条鱼只遵守三条局部规则：向身边最近的伙伴靠拢、与太近的鱼保持距离、向身边多数同伴的方向对齐，并通过侧线感知邻居的水流，把信息以约每30毫秒一次的速度在鱼群中传递。任何一条鱼察觉危险先转向，动作沿“信息波”传播，整个鱼群就能在不到一秒内完成集体转向。这种同步让捕食者面对一片模糊的“超级个体”，难以锁定单个目标。
The school has no leader; the turn is an emergent, self-organized behavior. Each fish follows three local rules: stay near neighbors, keep a minimum distance, and align with the heading of nearby fish, while its lateral line senses neighbors' water movements, passing information through the group about every 30 milliseconds. When any fish detects danger and turns, the movement spreads as an information wave and the whole school completes a synchronized turn in under a second. This synchrony makes predators face a blurred superorganism and makes it hard to single out any individual.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Science（鱼群集体行为）
Science (fish schooling behavior)
#鱼群 #自组织 #集体行为
什么是回声定位，哪些动物会用到？
What is echolocation, and which animals use it?
回声定位是发出声音并听回声来判断物体位置和距离，蝙蝠和齿鲸（如海豚）都用它夜间或水下“看”世界。
Echolocation sends sounds and listens for echoes to judge distance and location; bats and toothed whales like dolphins use it to 'see' in dark or water.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#回声定位 #蝙蝠 #鲸
帝企鹅爸爸在漫长极夜里孵蛋，是怎么做到几个月不吃东西的？
How do male emperor penguins survive months without food while incubating eggs through the polar night?
雌企鹅产蛋后就回到海里捕食，孵蛋任务全部落在雄企鹅身上。雄企鹅在极夜中把蛋放在脚背上、用育儿袋盖住，两个多月不吃不喝，靠夏秋两季积累的厚厚脂肪维持生命。它们上千只挤在一起轮流换到群体中心，利用同伴的体温挡住零下几十摄氏度的寒风，并把代谢率降到最低来省能量。雌企鹅归来时，雄企鹅常常已瘦掉近一半体重。
After the female lays, she heads back to the sea to feed, leaving the male to incubate. Through the polar night he balances the egg on his feet under a brood pouch, fasting for more than two months on the fat stored during summer and autumn. Thousands huddle together, taking turns at the warm center, sheltering from winds of tens of degrees below zero, and lowering metabolism to save energy. By the time the female returns, the male has often lost nearly half his body weight.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#帝企鹅 #孵蛋 #群聚
鱼用什么呼吸？
How do fish breathe?
鱼用鳃从水中提取溶解的氧气，水流过鳃丝时氧气进入血液，二氧化碳排出。
Fish use gills to extract dissolved oxygen from water; as water flows over gill filaments, oxygen enters the blood and carbon dioxide leaves.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#鱼 #鳃 #呼吸
鱼类体侧的侧线系统有什么功能？
What is the function of the lateral line running along a fish's body?
侧线是鱼类和水生两栖类特有的感觉器官，由沿体侧分布的机械感觉单元（神经丘）组成，能感受水流方向、流速、水压变化和低频振动，相当于远距离触觉。它帮助鱼类躲避障碍和捕食者、发现猎物、感知同伴动向，并辅助群体游动。
The lateral line is a sensory organ unique to fish and aquatic amphibians, composed of mechanosensory units called neuromasts arranged along the body. It detects water currents, pressure changes, and low-frequency vibrations, functioning like touch at a distance. It helps fish avoid obstacles and predators, locate prey, sense companions, and coordinate schooling.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《动物学》(刘凌云、郑光美) 鱼类
Zoology (Liu Lingyun & Zheng Guangmei), Osteichthyes
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#侧线 #神经丘 #鱼类感觉
为什么猫的眼睛在夜里会发亮？
Why do cats' eyes glow in the dark?
猫眼底有一层反光膜，能把微弱光线反射回视网膜二次利用，所以在暗处也看得清，并显得发亮。
Cats have a reflective layer behind the retina that bounces dim light back for a second chance to see, so their eyes glow and see well in dark.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#猫 #夜视 #反光膜
节肢动物门包括昆虫、甲壳类、蛛形类和多足类等，它们有哪些共同的形态特征？
The phylum Arthropoda includes insects, crustaceans, arachnids, and myriapods. What morphological features do all arthropods share?
节肢动物身体分节，具成对的分节附肢（"节肢"即分节的足），体表覆盖由几丁质和蛋白质构成的坚硬外骨骼，需周期性蜕皮才能生长。它们身体左右对称，循环系统为开放式，血淋巴直接灌注组织间隙。
Arthropods have segmented bodies with paired, jointed appendages (the name literally means "jointed legs"), and the body is covered by a hard exoskeleton of chitin and protein that must be molted periodically for growth. They are bilaterally symmetrical and have an open circulatory system in which hemolymph bathes the tissues directly.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《普通生物学》(陈阅增) 动物界章节
General Biology (Chen Yuezeng), animal kingdom chapter
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040583151（豆瓣书目条目: 陈阅增普通生物学）
#节肢动物 #外骨骼 #蜕皮
羊膜卵的出现对爬行动物和鸟类的演化有什么重大意义？
Why is the appearance of the amniotic egg so significant for the evolution of reptiles and birds?
羊膜卵具有卵壳和羊膜、卵黄囊、尿囊等胚外膜：卵壳减少水分蒸发并保护胚胎，羊膜提供充满羊水的液体环境，卵黄囊供营养，尿囊储存代谢废物并参与气体交换。这使胚胎能在干燥的陆地上完成发育，使爬行动物成为第一批真正摆脱水体、完全陆生的脊椎动物。
The amniotic egg has a protective shell and extraembryonic membranes: the shell reduces water loss and protects the embryo, the amnion encloses the embryo in amniotic fluid, the yolk sac provides nourishment, and the allantois stores metabolic waste and aids gas exchange. This allows the embryo to develop on dry land, making reptiles the first fully terrestrial vertebrates.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《普通生物学》(陈阅增) 脊椎动物演化
Encyclopaedia Britannica, "amniote"
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040583151（豆瓣书目条目: 陈阅增普通生物学）
#羊膜卵 #胚外膜 #完全陆生
鸟类除了肺以外还有发达的气囊系统，气囊有什么重要作用？
Birds have an elaborate air-sac system in addition to their lungs. What are the key functions of the air sacs?
气囊与肺相连，使空气在肺内单向流动，实现双重呼吸，即使呼气和吸气时都能进行气体交换，满足飞行时的高耗氧需求。气囊还能减轻体重（相当于空心结构）、辅助飞行时散热，部分种类的气囊还参与发声（如鸣管共鸣）及水鸟的浮力调节。
Air sacs connect to the lungs and create a unidirectional flow of air through the lung, enabling double breathing: gas exchange occurs during both inhalation and exhalation, meeting the high oxygen demand of flight. They also reduce body weight, help dissipate heat during flight, and in some species participate in sound production (e.g., syringeal resonance) and buoyancy control in aquatic birds.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《动物学》(刘凌云、郑光美) 鸟纲
Zoology (Liu Lingyun & Zheng Guangmei), Aves
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#鸟类 #气囊 #双重呼吸
青蛙等两栖动物为什么能靠皮肤辅助呼吸？
Why can frogs and other amphibians use their skin as an auxiliary respiratory organ?
两栖动物皮肤薄而湿润，真皮层富含毛细血管，氧气可以透过皮肤直接扩散进血液，二氧化碳反向排出。在水中、冬眠或潜水时，皮肤呼吸甚至是主要呼吸途径。由于依赖湿润皮肤换气，两栖动物大多生活在潮湿环境，且不能长时间离水。
Amphibian skin is thin and moist, with a dermis rich in capillaries, so oxygen diffuses directly across the skin into the blood and carbon dioxide is released in the opposite direction. During swimming, hibernation, or diving, cutaneous respiration can even become the main route. Because they depend on a moist skin surface, most amphibians live in humid habitats and cannot stay out of water for long.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《普通生物学》(陈阅增) 脊椎动物章节
General Biology (Chen Yuezeng), vertebrates
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040583151（豆瓣书目条目: 陈阅增普通生物学）
#两栖纲 #皮肤呼吸 #潮湿环境
变色龙为什么会变色？
Why does a chameleon change color?
变色龙皮肤里的色素细胞可扩张或收缩，借此交流、调节体温或融入环境，并非只为隐藏。
Pigment cells in a chameleon's skin expand or contract to communicate, regulate temperature, or blend in—not only for hiding.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#变色龙 #色素 #伪装
昆虫是怎样长大的？
How do insects grow up?
许多昆虫经历变态，如蝴蝶从卵到毛虫、蛹，再羽化成成虫，形态完全不同。
Many insects metamorphose—a butterfly goes from egg to caterpillar to chrysalis to adult, with totally different forms.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#昆虫 #变态 #发育
章鱼和鱿鱼属于软体动物门头足纲，它们的神经系统相比蜗牛等软体动物有什么突出特点？
Octopuses and squids belong to the class Cephalopoda of the phylum Mollusca. How does their nervous system stand out compared with that of snails and other mollusks?
头足类是软体动物中神经系统最发达的类群，中枢神经高度集中形成脑，神经元数量巨大（章鱼约5亿个，与哺乳动物相当）。它们具有发达的视觉、出色的学习和记忆能力，能解决迷宫等复杂问题，并表现出工具使用等高级行为。
Cephalopods possess the most advanced nervous system among mollusks. The central nervous system is highly concentrated into a brain with a huge number of neurons; an octopus has about 500 million, comparable to a mammal. They have keen vision, strong learning and memory, can solve mazes and other complex problems, and even show tool use.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《动物学》(刘凌云、郑光美) 软体动物门
Zoology (Liu Lingyun & Zheng Guangmei), Mollusca
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#头足纲 #神经系统 #章鱼
大雁为什么要排成“人”字形飞？带头的大雁最吃亏吗？
Why do geese fly in a V formation, and does the leading bird get the worst deal?
人字队形是空气动力学的好买卖。领头雁扇翅会在身后两侧产生向上的涡流，后面的雁正好借这股升力省力飞行，研究实测可节省约一到两成的能量。队形中会定时轮换，领头雁累了就退到后面，由另一只顶上，所以没有谁一直吃亏。小雁和体弱者常排在后侧气流的有利位置，整个雁群因此能飞得更远。
The V formation is good aerodynamics. Each bird's wing flaps leave upward-moving vortices behind, and the birds behind ride that lift, saving roughly ten to twenty percent of energy in measured studies. The lead position rotates: a tired leader drops back and another bird takes over, so nobody is permanently disadvantaged. Young and weak birds often sit in the most favorable spots, letting the whole flock fly farther.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Nature（V形编队研究）
Nature (V-formation flight study)
#人字编队 #涡流 #省力飞行
海星属于棘皮动物门，这类动物最突出的结构特征是什么？
Starfish belong to the phylum Echinodermata. What is the most striking structural feature of this group?
棘皮动物（海星、海胆、海参等）成体呈五辐射对称，体表有棘或突起，体内具钙质骨板。它们特有的水管系统驱动成百上千只管足，用于运动、捕食和呼吸。棘皮动物是后口动物，与脊索动物（包括人类）的亲缘关系比与大部分无脊椎动物更近。
Echinoderms (starfish, sea urchins, sea cucumbers, etc.) show pentaradial symmetry as adults and bear spines and internal calcareous plates. Their unique water vascular system powers hundreds of tube feet used for locomotion, feeding, and respiration. Echinoderms are deuterostomes, more closely related to chordates (including humans) than to most other invertebrates.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#棘皮动物 #水管系统 #后口动物
抹香鲸和威德尔海豹凭什么能在深潜时长时间闭气,肌红蛋白的什么性质支撑了这种能力?
What lets sperm whales and Weddell seals hold their breath through long deep dives, and which property of myoglobin supports this capacity?
靠骨骼肌中超高浓度的肌红蛋白储氧,并借升高的净表面电荷维持蛋白可溶。Mirceta等比较数十种哺乳动物后发现,顶尖潜泳者的肌红蛋白浓度远超陆生近缘种,且净电荷随浓度同步升高,同种电荷相互排斥阻止高密度蛋白聚集沉淀,使肌肉成为储氧海绵;下潜时心动徐缓、外周血管收缩,氧气集中供应心脏与脑,抹香鲸得以一口气下潜两千余米追捕乌贼。
They bank oxygen in extraordinarily concentrated skeletal-muscle myoglobin, kept soluble by elevated net surface charge. Comparing dozens of mammals, Mirceta and colleagues found elite divers pack far more myoglobin than land-dwelling relatives, with net charge rising alongside concentration, so like-charged proteins repel instead of aggregating and muscle turns into an oxygen sponge. Underwater, bradycardia and peripheral vasoconstriction ration blood oxygen to heart and brain, letting sperm whales chase squid over two kilometers down on a single breath.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
Mirceta S等论文《Evolution of mammalian diving capacity traced by myoglobin net surface charge》,Science 2013(利物浦大学Berenbrink团队)
Mirceta S et al., 'Evolution of mammalian diving capacity traced by myoglobin net surface charge', Science, 2013 (Berenbrink team, University of Liverpool)
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1126/science.1234192：Evolution of Mammali
#海洋哺乳动物 #潜水生理 #肌红蛋白
鸟为什么能飞？
Why can birds fly?
鸟类有轻而中空的骨头、带羽毛的翅膀和强壮的胸肌，加上高效呼吸，适合在空中飞行。
Birds have light hollow bones, feathered wings, strong chest muscles, and efficient breathing, all suited for flight.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#鸟 #飞行 #羽毛
骆驼能好几天不喝水，它的身体是怎么“存水”和“省水”的？
Camels go days without water—how does the body “store” and “save” it?
骆驼并非把水存瘤胃里，而是靠圆红细胞脱水后仍能恢复、体温白天可升高减少出汗、浓缩尿和干粪省水；驼峰脂肪代谢还能产生代谢水。所以它是“省水高手”而非水箱。
Camels don't store water in humps; their oval red cells survive dehydration and re-swell, their body temperature rises by day to cut sweating, and they concentrate urine and dry feces. Hump fat even yields metabolic water—masters of saving, not tanks.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#骆驼 #节水 #代谢水
为什么壁虎能爬上光滑的墙壁？
Why can geckos climb smooth walls?
壁虎脚趾上有数百万极细的刚毛，靠分子间微弱引力（范德华力）像无数小吸盘一样粘住表面。
Gecko toes have millions of tiny bristles that stick via weak molecular forces (van der Waals forces), like countless tiny suction cups.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
Autumn K. 等,《Adhesive force of a single gecko foot-hair》,Nature 第405卷,2000
K. Autumn et al., Adhesive force of a single gecko foot-hair, Nature 405 (2000) 681-685
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1038/35015073：Adhesive force of a single
#壁虎 #刚毛 #吸附
昆虫（如蝗虫、蜜蜂）的身体分为哪几部分？它们依靠什么结构进行气体交换？
Insect bodies (e.g., locusts, bees) are divided into which major parts, and what structures do they use for gas exchange?
昆虫身体分头、胸、腹三部分，头部有触角、复眼和口器，胸部通常有三对足和两对翅。它们不靠肺或鳃呼吸，而是通过体侧的气门连接气管系统，把氧气直接输送到全身组织细胞。
Insect bodies consist of three tagmata: head, thorax, and abdomen. The head bears antennae, compound eyes, and mouthparts; the thorax typically carries three pairs of legs and two pairs of wings. Instead of lungs or gills, insects breathe through spiracles along the body that open into a tracheal system, delivering oxygen directly to tissues.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#昆虫纲 #气门 #气管系统
为什么长颈鹿的脖子那么长？
Why is a giraffe's neck so long?
长颈鹿祖先中脖子较长的个体能吃到高处树叶、更易存活繁殖，经长期自然选择脖子越来越长。
Among giraffe ancestors, longer-necked individuals reached high leaves and survived better, so natural selection gradually lengthened the neck.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#长颈鹿 #选择 #适应
海豚是怎么在黑黑的水里找食物的？
How does a dolphin find food in dark water?
海豚会发出“咔嗒”声，声音碰到鱼再弹回来，它用耳朵接收回声判断位置和距离。这种本领叫回声定位。
A dolphin sends out clicking sounds that bounce off fish and return as echoes, which it hears to judge where and how far they are. This skill is called echolocation.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#海豚 #回声定位 #哺乳动物
蜜蜂之间是怎么“说话”的？
How do bees 'talk' to each other?
找到花的蜜蜂回巢后会跳摇摆舞，用舞的方向和圈数告诉同伴花在哪里、有多远。这是蜜蜂独特的指南针。
A bee that finds flowers returns and performs a waggle dance; the direction and number of turns tell nestmates where the flowers are and how far. It is the bee's special compass.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#蜜蜂 #舞蹈 #昆虫
鸡蛋为什么有硬硬的壳？
Why do eggs have a hard shell?
蛋壳像小房子，保护里面软软的蛋黄和宝宝。有了壳，蛋才不会被压坏。
An eggshell is like a little house that protects the soft yolk and the growing baby inside. The shell keeps the egg from getting squashed.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#鸡蛋 #蛋壳 #卵生动物
恐龙为什么会消失？
Why did the dinosaurs disappear?
约6600万年前，一颗小行星撞上地球，扬起漫天灰尘遮住太阳。天气骤变、植物枯死，大型恐龙因此灭绝。
About 66 million years ago, an asteroid hit Earth and threw up dust that blocked the sun. The climate changed and plants died, ending the large dinosaurs.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#恐龙 #灭绝 #史前
大象的长鼻子有什么用？
What is an elephant's long trunk for?
大象用长鼻子喝水、拿食物、闻气味，还能像手一样抱住小象。
An elephant uses its trunk to drink, grab food, smell, and even hug its calf like an arm.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#大象 #鼻子 #工具
水母是怎么蜇人的？
How does a jellyfish sting?
水母的触手上布满带毒的小刺细胞。碰到猎物时，小刺会弹出把毒液送进去，用来抓住食物和自卫。
A jellyfish's tentacles are covered with tiny stinging cells. When they touch prey, the cells fire and inject venom to catch food and defend themselves.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#水母 #蜇刺 #海洋动物
毛毛虫是怎么变成蝴蝶的？
How does a caterpillar turn into a butterfly?
毛毛虫先结成茧或蛹，在里面悄悄改变身体结构。过一段时间，它破壳而出，长出翅膀变成蝴蝶，这叫完全变态。
A caterpillar first forms a chrysalis or pupa, where its body quietly rearranges inside. After a while it breaks out with wings as a butterfly, a change called complete metamorphosis.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#蝴蝶 #变态 #昆虫
有些动物为什么长得像别的动物？
Why do some animals look like other animals?
这是拟态：无害的虫子模仿有毒或厉害的动物来吓退敌人。比如食蚜蝇长得像会蜇人的蜜蜂，敌人就不敢惹它。
This is mimicry: a harmless insect copies a poisonous or dangerous one to scare enemies away. For example, a hoverfly looks like a stinging bee, so predators leave it alone.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#拟态 #模仿 #动物
有些动物怎么把自己藏起来？
How do some animals hide themselves?
动物用保护色让自己的颜色和周围一样，敌人就很难发现。比如变色龙能跟着背景变色。
Animals use camouflage by matching their color to the surroundings, so enemies cannot spot them. A chameleon, for example, can change color to match where it sits.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#伪装 #保护色 #动物
章鱼为什么有八条手臂？
Why does an octopus have eight arms?
章鱼用八条手臂抓住食物、爬来爬去和躲敌人。手臂上还有吸盘，可以稳稳吸住东西。
An octopus uses its eight arms to grab food, crawl around, and hide from enemies. The arms have suckers that help it hold on tightly.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#章鱼 #手臂 #海洋动物
珊瑚礁是怎么形成的？
How do coral reefs form?
珊瑚礁由无数小珊瑚虫分泌石灰质外壳堆起来。一代代珊瑚虫死后，硬壳留下，慢慢长成巨大的礁石。
Coral reefs are built by tiny animals called polyps that secrete a hard limestone shell. When old polyps die, their shells remain and pile up into huge reefs over time.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
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吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#珊瑚礁 #珊瑚虫 #海洋
小鸟为什么要搭鸟窝？
Why do birds build nests?
鸟窝是小鸟安全的家，用来生蛋和照顾宝宝。软软的草和羽毛让蛋宝宝暖暖的。
A nest is a safe home where birds lay eggs and care for babies. Soft grass and feathers keep the eggs warm and cozy.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#鸟窝 #鸟蛋 #动物
蚂蚁为什么排着队走路？
Why do ants walk in a line?
蚂蚁走路时会留下看不见的小味道，后面的蚂蚁跟着味道走。这样大家就能一起找到食物回家。
Ants leave a tiny scent trail as they walk, and others follow the smell. That helps the whole group find food and get back home.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#蚂蚁 #队伍 #昆虫
长颈鹿的脖子为什么那么长？
Why do giraffes have such long necks?
长颈鹿的长脖子帮它吃到高高的树叶。它只需要伸长脖子，就能吃到别的动物够不着的美食。
A giraffe's long neck lets it reach leaves high up in trees. That means it can eat food that other animals cannot reach.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#长颈鹿 #脖子 #哺乳动物
哺乳动物有什么共同特征？
What do mammals have in common?
哺乳动物大多用乳汁喂养幼崽、身上有毛发或皮毛，并且是温血动物。
Mammals usually feed their young with milk, have hair or fur, and are warm-blooded.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#哺乳动物 #乳汁 #毛发
小动物为什么要喝妈妈的奶？
Why do baby animals drink their mother's milk?
妈妈的奶水里有小宝宝长身体需要的营养。喝奶让小动物长得又快又健康。
Mother's milk has the food a baby needs to grow strong. Drinking milk helps little animals grow big and healthy.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#宝宝 #奶水 #哺乳动物
恐龙到底有多大？
Just how big were the dinosaurs?
恐龙大小差别很大，最小的只有小鸡那么小，最大的像阿根廷龙能长到30多米长。它们曾经是陆地上最大的动物。
Dinosaurs varied hugely in size; the smallest were no bigger than a chicken, while giants like Argentinosaurus reached over 30 meters. They were once the largest land animals.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#恐龙 #体型 #史前
蝴蝶的翅膀为什么五颜六色？
Why are butterfly wings so colorful?
蝴蝶翅膀上的小鳞片有各种颜色，好看又能吓走敌人。有些颜色还能帮它藏在花丛里。
Tiny scales on a butterfly's wings make many colors that can scare away enemies. Some colors also help it hide among the flowers.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#蝴蝶 #翅膀 #昆虫
大象的耳朵为什么那么大？
Why do elephants have such big ears?
大象的耳朵像两把大扇子，可以帮它散热。天气热的时候，耳朵里有很多血管，血凉下来就能让身体舒服一点。
An elephant's ears work like big fans that help it cool off. Warm blood flows through the ears and loses heat, which keeps the elephant comfortable in hot weather.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#大象 #耳朵 #哺乳动物
熊猫为什么爱吃竹子？
Why do pandas love to eat bamboo?
大熊猫几乎只吃竹子，因为竹林里竹子很多很方便。竹子虽然不好消化，但熊猫一天能吃很多很多。
Giant pandas eat mostly bamboo because it grows all around them and is easy to find. Bamboo is hard to digest, but a panda can eat a huge amount in one day.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#大熊猫 #竹子 #哺乳动物
蚂蚁团队是怎么分工合作的？
How do ants work together as a team?
蚁群里有不同的“工种”，有的找食物，有的照顾宝宝，有的守家门。它们靠气味和触碰传递消息，把大事分成小事一起完成。
An ant colony has different jobs: some find food, some care for babies, and some guard the nest. They pass messages by scent and touch, splitting big tasks into small ones.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#蚂蚁 #合作 #昆虫
蜜蜂为什么要做蜂蜜？
Why do bees make honey?
蜜蜂采花蜜做成蜂蜜，用来当冬天的存粮。蜂蜜甜甜的，能让蜜蜂在没花的时候也有东西吃。
Bees turn flower nectar into honey to save as food for winter. The sweet honey feeds them when there are no flowers around.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#蜜蜂 #蜂蜜 #昆虫
恐龙都吃什么？
What did dinosaurs eat?
恐龙分肉食和草食两大类，霸王龙吃肉，梁龙吃植物。还有像鸭嘴龙这样的，既啃叶子也吃点别的。
Dinosaurs split into meat-eaters and plant-eaters: T. rex ate meat while Diplodocus ate plants. Some, like the duck-billed dinosaurs, mostly chewed leaves.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#恐龙 #食性 #史前
萤火虫为什么会发光？
Why do fireflies glow?
萤火虫身体里有一种会发光的物质，一闪一闪像小灯笼。它们用光来和同伴打招呼。
Fireflies have a special light-making substance in their bodies that blinks like a tiny lantern. They use the light to say hello to other fireflies.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#萤火虫 #发光 #昆虫
有些鸟为什么要飞到很远的地方？
Why do some birds fly to faraway places?
天气变冷或食物变少时，鸟会成群飞到暖和的地方。等天气好了，它们再飞回来，这叫迁徙。
When it gets cold or food runs low, birds fly together to warmer places. They come back when conditions improve, and this travel is called migration.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#迁徙 #候鸟 #动物
企鹅有翅膀为什么不会飞？
Why do penguins have wings but cannot fly?
企鹅的翅膀演化成了像船桨一样的鳍状肢，用来在水里"飞"——也就是游泳。对靠在海里捕鱼的企鹅来说，有力的游泳比在空中飞更有用，所以它们放弃了飞行、换来了潜水本领。
Penguins' wings evolved into paddle-like flippers used to "fly" through water—that is, to swim. For birds that live by fishing at sea, powerful swimming is more useful than flying, so they traded flight for expert diving.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Sibley，《Sibley 鸟类生活与行为指南》（Knopf，2001）
Sibley, The Sibley Guide to Bird Life & Behavior (Knopf, 2001)
#企鹅 #鳍肢 #适应性 #游泳
袋鼠为什么用跳的走路？
Why do kangaroos hop instead of walk?
袋鼠的后腿又长又有力，跳起来特别快又省力。它跳一步就能跑很远，还能用大尾巴保持平衡。
A kangaroo has long, strong back legs that make hopping fast and easy. One big hop covers a lot of ground, and its big tail helps it balance.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#袋鼠 #跳跃 #哺乳动物
鲸鱼喷水柱是在喝水吗？
When a whale spouts water, is it drinking?
鲸鱼喷水不是喝水，是把肺里用过的空气用力呼出来。空气碰到冷空气就变成白白的小水雾，看起来像喷泉。
A whale is not drinking when it spouts. It is blowing out used air from its lungs, and the warm breath turns into a white mist that looks like a fountain.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#鲸鱼 #喷水 #海洋动物
松鼠为什么要在秋天藏果子？
Why do squirrels hide nuts in autumn?
松鼠在秋天把果子埋起来存着，因为冬天找不到食物。等饿了再挖出来吃，就能安稳过冬。
Squirrels bury nuts in autumn because food is hard to find in winter. They dig them up later when hungry, which helps them survive the cold season.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#松鼠 #储粮 #动物
电鳗是怎么发出电击的？
How does an electric eel produce its electric shock?
电鳗尾巴里有特化的发电细胞（电细胞，由肌肉演化而来），像电池一样排列；受到神经触发时它们同步翻转离子差，三块电器官串联可产生超过600伏的电击。电鳗用它来捕食、防御和在水中"定位"。
An electric eel has specialized electrocytes (derived from muscle) in its tail arranged like batteries; when nerves trigger them they simultaneously flip ion gradients, and three electric organs in series can produce shocks over 600 volts. The eel uses this for hunting, defense, and electrolocation.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
Catania，《电鳗惊人的捕食击打》，Science 2014年
Catania, "The shocking predatory strike of the electric eel," Science (2014)
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1126/science.1260807：The shocking predato
#电鳗 #电细胞 #电器官 #电定位
树懒为什么动作那么慢？
Why do sloths move so slowly?
树懒吃树叶，树叶没什么营养，所以它动作慢来省力气。慢吞吞的它还能躲开爱吃肉的动物。
Sloths eat leaves that give little energy, so they move slowly to save strength. Moving slowly also helps them hide from animals that might eat them.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#树懒 #慢 #哺乳动物
鲸鱼为什么会“唱歌”？
Why do whales 'sing'?
鲸鱼发出又低又长的声音，可以在很远的海里互相打招呼。科学家认为它们用歌声找朋友和告诉同伴自己在哪里。
Whales make low, long sounds that travel far underwater to greet each other. Scientists think the songs help them find friends and tell companions where they are.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#鲸鱼 #歌声 #海洋动物
蓝鲸到底有多大？
Just how big is a blue whale?
蓝鲸是地球上最大的动物，体长可超过30米，心脏就有一辆小汽车那么大。它虽然庞大，却只吃小小的磷虾。
The blue whale is the largest animal on Earth, reaching over 30 meters long, with a heart the size of a small car. Even so, it eats only tiny shrimp called krill.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#蓝鲸 #体型 #海洋动物
熊冬眠时身体会发生什么变化？
What happens to a bear's body during hibernation?
冬眠时熊的心跳和体温下降，几乎不吃喝也不上厕所，靠夏天攒下的脂肪过活。开春后它醒来，已经瘦了一大圈。
During hibernation a bear's heartbeat and body temperature drop, and it barely eats, drinks, or moves, living on fat stored in summer. When spring comes it wakes up much thinner.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#熊 #冬眠 #动物
蜘蛛是昆虫吗？
Is a spider an insect?
不是。蜘蛛有8条腿、身体分两段，属于蛛形纲；昆虫有6条腿、身体分三段。
No. Spiders have 8 legs and two body parts (arachnids); insects have 6 legs and three body parts.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#蜘蛛 #昆虫 #区分
瓢虫身上为什么有斑点？
Why do ladybugs have spots?
瓢虫的斑点是在告诉鸟儿：我不好吃，别吃我。亮亮的颜色让敌人不敢靠近。
A ladybug's spots tell birds that it does not taste good, so leave it alone. The bright colors warn enemies to stay away.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#瓢虫 #斑点 #昆虫