什么是社会性昆虫？
What are eusocial insects?
真社会性昆虫如蚂蚁、蜜蜂和白蚁，具有合作育幼、世代重叠和明确分工的繁殖阶层。群体中多数个体不育，专职照顾少数能繁殖的蚁后。这种高度合作在进化上极具优势。
Eusocial insects such as ants, bees, and termites show cooperative brood care, overlapping generations, and a clear reproductive division of labor. Most members are sterile and dedicated to caring for a few reproductive queens. This intense cooperation is a major evolutionary advantage.
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
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）
#社会性 #昆虫 #分工
同源器官和同功器官有什么区别？
What is the difference between homologous and analogous organs?
同源器官源自共同祖先、结构相似但功能可能不同，如人的手臂、蝙蝠的翼和鲸的鳍都由相似骨骼构成，证明亲缘关系。同功器官功能相似却来源不同，如昆虫翅与鸟翼分别独立演化，属于趋同进化的结果。
Homologous organs come from a common ancestor with similar structure but possibly different functions, human arms, bat wings, and whale flippers share similar bones, evidencing kinship. Analogous organs look alike in function but differ in origin, like insect wings and bird wings, products of convergent evolution.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
Evolution (Futuyma)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#同源器官 #同功器官 #趋同进化 #共同祖先
什么是动物的大小定律？
What is Bergmann's rule about animal size?
伯格曼定律指出，同一类群的恒温动物在较冷地区往往体型更大，因为较大的身体散热更慢、更易保温。例如北方狼比南方狼更壮硕。这是气候影响体型演化的例子。
Bergmann's rule states that among warm-blooded species, populations in colder regions tend to be larger because a bigger body loses heat more slowly and retains warmth better. Northern wolves, for example, are bulkier than southern ones. It is an example of climate shaping body size evolution.
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
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）
#伯格曼定律 #体型 #气候
贝茨氏拟态和缪勒氏拟态的进化逻辑有何不同？
How do Batesian and Müllerian mimicry differ in evolutionary logic?
贝茨氏拟态是无害物种模仿有毒物种以骗过捕食者，单方受益；缪勒氏拟态是多个有毒物种彼此相似，共同强化捕食者的回避学习，双方受益。
Batesian mimicry is a harmless species imitating a toxic one to deceive predators, benefiting only the mimic; Müllerian mimicry is several toxic species resembling each other to reinforce predator avoidance learning, benefiting all.
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 #贝茨 #缪勒
真社会性为什么被视为合作的极端演化策略？
Why is eusociality considered an extreme evolutionary strategy of cooperation?
真社会性物种如蜜蜂和蚂蚁中多数个体不育、专职照顾少数繁殖者并分工协作，亲缘选择使帮助近亲繁殖的收益超过自身繁殖，从而演化出高度利他结构。
In eusocial species like bees and ants most individuals are sterile, caring for few reproductives with division of labor; kin selection makes helping relatives' reproduction outweigh personal reproduction, evolving extreme altruism.
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)
#真社会性 #亲缘选择 #利他
两侧对称和辐射对称对动物演化意味着什么？
What do bilateral and radial symmetry mean for animal evolution?
辐射对称（如刺胞动物）身体绕中轴呈辐射状，适合固着或漂浮、从各方向感知环境；两侧对称（绝大多数动物）有前后、左右之分，便于定向运动和头部集中感官，是复杂行为和组织分工演化的基础。
Radial symmetry, as in cnidarians, arranges the body around a central axis, suiting sessile or drifting life that senses from all sides; bilateral symmetry, in most animals, distinguishes front-back and left-right, enabling directed movement and head-centered senses, the basis for complex behavior and division of labor.
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》
Campbell Biology
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#两侧对称 #辐射对称 #刺胞动物 #演化
哪些动物具有显著的再生能力，原理是什么？
Which animals show notable regeneration, and how does it work?
涡虫可凭少量细胞重建全身，蝾螈能再生四肢、尾和晶状体，斑马鱼可修复心脏和鳍，这些都依赖成体干细胞与去分化的细胞重新进入细胞周期。研究再生机制对组织工程和医学修复有重要价值。
Planarians can rebuild their whole body from tiny fragments, axolotls regenerate limbs, tails, and lenses, and zebrafish repair heart and fins, all relying on adult stem cells and dedifferentiating cells re-entering the cell cycle. Studying regeneration informs tissue engineering and medical repair.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
《发育生物学》
Developmental Biology (Gilbert)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9781605358246 (2013)
#再生 #干细胞 #涡虫 #蝾螈
什么是动物的对称性？
What is animal symmetry?
动物的身体布局可分为辐射对称、两侧对称和不对称等类型。水母呈辐射对称，能从多个方向感知环境；大多数动物为两侧对称，有了明确的前后和左右。对称方式反映了不同的运动和生活方式。
Animal body plans include radial, bilateral, and asymmetric types. Jellyfish show radial symmetry and sense the environment from many directions, while most animals are bilaterally symmetric with clear front-back and left-right axes. The symmetry reflects different movement and life styles.
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
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）
#对称性 #身体结构 #演化
昆虫的外骨骼有什么优缺点？
What are the pros and cons of an insect exoskeleton?
昆虫体表覆盖几丁质外骨骼，能支撑身体、防止水分流失并抵御伤害，但坚硬的外壳限制生长，必须周期性蜕皮才能变大。蜕皮期间虫体脆弱，是生存的风险窗口。
Insects are covered by a chitinous exoskeleton that supports the body, prevents water loss, and shields against harm, but the rigid shell limits growth, forcing periodic molting to get bigger. During molting the soft body is vulnerable, a risky window for survival.
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》
Campbell Biology
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#外骨骼 #几丁质 #蜕皮 #昆虫
蝙蝠和鲸的回声定位能力是同源还是趋同？
Is echolocation in bats and whales homologous or convergent?
二者亲缘较远且分别独立演化出回声定位，属于趋同进化；虽然功能相似，但其神经与发声结构的发育路径并不源自共同祖先的同一特征。
Bats and whales are distantly related and evolved echolocation independently, a case of convergent evolution; despite similar function their neural and vocal structures did not derive from the same ancestral trait.
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）
#回声定位 #趋同 #蝙蝠
昆虫的外骨骼有什么作用？
What is the function of an insect's exoskeleton?
昆虫的外骨骼由几丁质构成，既提供支撑和保护，又防止体内水分蒸发，使其能适应陆地生活。但它不能随身体生长，因此昆虫必须定期蜕皮才能长大。
An insect's exoskeleton, made of chitin, provides support and protection and prevents water loss, letting insects live on land. Because it cannot grow, insects must molt periodically to enlarge.
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）
#外骨骼 #几丁质 #蜕皮
什么是共生关系？
What is a symbiotic relationship?
共生指两种生物长期密切接触并相互影响的关系，可分为互利、寄生和偏利等类型。小丑鱼与海葵互利，蚜虫与蚂蚁也常互惠。寄生则是一方受益而另一方受害。
Symbiosis is a long-term, close association between two species that affects both, including mutualism, parasitism, and commensalism. Clownfish and sea anemones help each other, and aphids and ants often trade benefits. Parasitism, by contrast, helps one side while harming the other.
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）
#共生 #互利 #寄生
完全变态和不完全变态的区别在哪里？
Where does complete metamorphosis differ from incomplete metamorphosis?
完全变态经历卵、幼虫、蛹、成虫四个阶段，幼虫与成虫形态差异大（如蝴蝶），不完全变态无蛹期，若虫与成虫形态渐进相似（如蝗虫）。
Complete metamorphosis has egg, larva, pupa and adult stages with drastically different larva and adult (e.g. butterflies); incomplete metamorphosis lacks a pupal stage and nymphs resemble adults progressively (e.g. grasshoppers).
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）
#变态 #幼虫 #发育
动物冬眠时机体会发生什么变化？
What happens to an animal's body during hibernation?
冬眠动物会大幅降低体温、心率和代谢率，以极少能量熬过食物匮乏的寒冬，常见如熊和旱獭。一些小型哺乳动物还会进入体温接近冰点的“蛰眠”（torpor）状态。
Hibernating animals sharply lower body temperature, heart rate, and metabolism to survive food-scarce winters on minimal energy—bears and marmots are examples. Some small mammals enter “torpor” with body temperatures near freezing.
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）
#冬眠 #代谢下降 #蛰眠
哺乳动物有哪些关键特征？
What are the key features of mammals?
哺乳动物大多体表被毛、通过乳腺哺育幼崽、具有膈肌分隔胸腹并恒温。它们多有发达的大脑和听觉（三块听小骨），除单孔类外均为胎生，是适应力极强的脊椎动物类群。
Most mammals are covered with hair, nourish young with mammary glands, and are endothermic with a diaphragm separating thorax and abdomen. They typically have a large brain and three middle-ear bones, and except for monotremes they give live birth, making them a highly adaptable vertebrate group.
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》
Campbell Biology
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#哺乳动物 #乳腺 #恒温 #胎生
昼夜节律是由什么内部机制驱动的？
What internal mechanism drives circadian rhythms?
昼夜节律由细胞内转录-翻译反馈环路（如 PER/CRY 蛋白周期积累与降解）驱动，并以约 24 小时为周期被光信号校准，调节睡眠、代谢等活动。
Circadian rhythms are driven by intracellular transcription-translation feedback loops (e.g. cyclical accumulation and degradation of PER/CRY proteins), tuned to ~24 hours and entrained by light to regulate sleep, metabolism and more.
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
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）
#昼夜节律 #生物钟 #反馈
蜘蛛和昆虫有什么不同？
How do spiders differ from insects?
蜘蛛属于蛛形纲，身体分头胸部和腹部两段、有八条腿、无触角和翅膀；昆虫则分头胸腹三段、六条腿、常有触角和翅。二者同属节肢动物，但分类地位不同。
Spiders are arachnids with a two-part body (cephalothorax and abdomen), eight legs, and no antennae or wings; insects have three body segments, six legs, and usually antennae and wings. Both are arthropods but belong to different classes.
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》
Campbell Biology
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#蜘蛛 #蛛形纲 #昆虫 #节肢动物
动物为什么会迁徙？
Why do animals migrate?
迁徙是动物随季节在繁殖地、越冬地和觅食地之间周期性移动的行为，多为了追逐食物、适宜气候或繁殖场所。候鸟、鲸和角马等都是典型例子，往往依赖地磁、星象和太阳等导航线索。
Migration is the seasonal, cyclical movement of animals between breeding, wintering, and feeding grounds, usually to chase food, favorable climate, or breeding sites. Migratory birds, whales, and wildebeest are classic examples, often navigating by geomagnetism, stars, and the sun.
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
尚玉昌,《动物行为学》第2版,北京大学出版社,2010
Shang Yuchang, Animal Behavior, 2nd ed., Peking University Press, 2010
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787301248478（按标识回读: 动物行为学（第二版））
#迁徙 #候鸟 #季节 #导航
什么是迁徙？
What is migration?
迁徙是动物随季节周期性地长途移动，以寻找食物、温暖或繁殖地。许多鸟类、鲸和角马都会大规模迁徙。这种行为的时机常与日照和温度等环境信号挂钩。
Migration is the seasonal, cyclical long-distance movement of animals to find food, warmth, or breeding grounds. Many birds, whales, and wildebeest migrate on a massive scale. Its timing is often tied to environmental cues like daylight and temperature.
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）
#迁徙 #季节 #动物行为
脊椎动物从水生到陆生的演化经历了哪些关键变化？
What key changes marked vertebrates' evolution from water to land?
早期鱼类演化出肺和肉质鳍（如总鳍鱼），使部分后代能在浅水呼吸并支撑身体；随后出现两栖类、爬行类，并演化出羊膜卵以摆脱对水的繁殖依赖。四肢、肺和羊膜卵是登陆的三大里程碑。
Early fish evolved lungs and fleshy fins (e.g., lobe-finned fish) letting descendants breathe in shallows and support their bodies; amphibians and then reptiles followed, with the amniotic egg freeing reproduction from water. Limbs, lungs, and the amniotic egg are the three milestones of land colonization.
难度 进阶 · 适合 初中(12-15)
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。
英国自然史博物馆（NHM）四足动物起源与脊椎动物登陆研究档案；Daeschler、Shubin 与 Jenkins 2006 年发表于《自然》（Nature）的提塔利克鱼（Tiktaalik）论文
Natural History Museum, London, tetrapod origins and vertebrate land colonization research; Daeschler, Shubin & Jenkins (2006), 'A Devonian tetrapod-like fish and the evolution of the tetrapod ear' (Nature 440)
#脊椎动物 #登陆 #羊膜卵
鸟类有哪些适应飞行的身体结构？
What body structures adapt birds for flight?
鸟类演化出中空轻质的骨骼、羽毛和由发达胸肌驱动的翅膀，以及高效的气囊双重呼吸系统来大量供氧。这些特征共同降低了体重、提升了飞行效率。
Birds evolved hollow, lightweight bones, feathers, powerful chest-muscle-driven wings, and an efficient air-sac dual respiratory system that supplies abundant oxygen. Together these reduce weight and boost flight efficiency.
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）
#鸟类 #飞行适应 #气囊呼吸
冬眠是怎样帮助动物度过严冬的？
How does hibernation help animals survive harsh winters?
冬眠是部分动物在食物匮乏、寒冷季节降低体温、心跳和代谢率的休眠状态，靠体内储存的脂肪维持基本生命。它减少能量消耗、避开恶劣环境，待春季回暖再苏醒活动。
Hibernation is a dormant state in some animals during cold, food-scarce seasons, lowering body temperature, heart rate, and metabolism and living off stored fat. It cuts energy use and rides out harsh conditions until warming spring allows activity again.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《动物生理学》
Animal Physiology
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040255287（豆瓣书目条目: 动物生理学）
#冬眠 #代谢率 #脂肪 #休眠
印痕行为为何只在特定敏感期形成？
Why does imprinting form only during a specific sensitive period?
洛伦兹发现雏鸟在孵化后短暂关键期内会把最先移动的大物体认作母亲并跟随，错过该窗口则难以建立，这是先天预编程与早期经验结合的学习。
Lorenz showed hatchlings in a brief postnatal window follow the first moving large object as mother; missing the window prevents formation—a learned behavior pre-programmed to a sensitive period.
难度 进阶 · 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
尚玉昌,《动物行为学》第2版,北京大学出版社,2010
Shang Yuchang, Animal Behavior, 2nd ed., Peking University Press, 2010
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787301248478（按标识回读: 动物行为学（第二版））
#印痕 #敏感期 #行为
昆虫为什么数量那么多？
Why are there so many insects?
昆虫体型小、繁殖快，且多有翅膀能广泛扩散，适应力极强。它们出现于陆地很早，占据了各种生态位。如今昆虫种类占已知动物的大多数。
Insects are small, reproduce quickly, and many have wings that let them spread widely, giving them great adaptability. They appeared early on land and occupy countless niches. Today insects make up the majority of known animal species.
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）
#昆虫 #多样性 #适应
鸟类为什么会飞？
Why can birds fly?
鸟类身体轻、骨骼中空，并长有能产生升力的羽毛翅膀。强有力的胸肌驱动翅膀扇动，而高效的肺系统提供充足氧气。这些特征共同让飞行成为可能。
Birds have light, hollow bones and feathered wings that generate lift. Powerful chest muscles drive the wing beats, and an efficient lung system supplies plenty of oxygen. Together these features make flight possible.
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
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）
#鸟类 #飞行 #羽毛
为什么蝴蝶小时候是毛毛虫？
Why is a butterfly once a caterpillar?
蝴蝶经历完全变态，从卵孵出毛毛虫，吃很多叶子快速长大。之后变成蛹，在蛹里身体被重新组织，最后破蛹成为蝴蝶。这是昆虫特有的奇妙变化。
Butterflies go through complete metamorphosis: they hatch from eggs as caterpillars that eat lots of leaves and grow fast. Then they become a pupa, inside which the body is reorganized, and finally emerge as butterflies. It is a marvelous change unique to insects.
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 #变态 #幼虫
脊椎动物包括哪些大类？
What major groups do vertebrates include?
脊椎动物是拥有由脊椎骨组成脊柱的动物，主要包括鱼类、两栖类、爬行类、鸟类和哺乳类五大类。它们大多有内骨骼和发达的中枢神经系统，是动物界中结构最复杂的一支。
Vertebrates are animals with a backbone made of vertebrae, chiefly fish, amphibians, reptiles, birds, and mammals. Most have an internal skeleton and a well-developed central nervous system, forming the most structurally complex branch of the animal kingdom.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《动物学》
Campbell Biology
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#脊椎动物 #鱼类 #鸟类 #哺乳类
两栖动物有什么特别之处？
What is special about amphibians?
两栖动物（如青蛙、蝾螈）小时候生活在水里用鳃呼吸，长大后可以到陆地用肺和皮肤呼吸。它们的皮肤湿润能帮忙换气，多数还要回到水里产卵，是连接水陆世界的动物。
Amphibians like frogs and salamanders live in water with gills when young and later move onto land breathing with lungs and skin. Their moist skin helps with gas exchange, and most return to water to lay eggs, bridging the aquatic and terrestrial worlds.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《动物学》
Campbell Biology
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787807410614（豆瓣书目条目: 动物学）
#两栖动物 #青蛙 #鳃 #变态
鱼睡觉吗?为什么鱼睁着眼睛游来游去?
Do fish sleep? Why do they swim with eyes open?
鱼也睡觉,但它们没有眼皮,合不上眼睛,只好睁着眼休息——躲在水草里慢吞吞漂着的那条,可能正在打盹呢。有的鱼还会睡在沙子挖的小窝里,盖着「沙被子」。
Fish do sleep, but they have no eyelids to close, so they rest eyes-open — that one drifting slowly in the weeds may be napping. Some even dig sandy sleeping bags to curl up in.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《十万个为什么》第六版生物分册,少年儿童出版社,2013
Ten Thousand Whys: Biology volume, 6th ed., Juvenile and Children Publishing House, 2013
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-7-5324-9328-9 · 核验依据 2 ISBN 9787532493289
#鱼 #睡觉 #海洋