毛毛虫变蝴蝶的时候,蛹里面到底发生了什么?
What happens inside a chrysalis while a caterpillar becomes a butterfly?
毛毛虫在蛹里会分泌酶把自己大部分身体化成营养汤,只保留一些叫「成虫盘」的小口袋;这些小口袋用汤里的材料长出翅膀、长腿和复眼。更神奇的是,有些蛾子能记住幼虫时期学会的躲避训练——化蝶并没有完全抹去记忆。
Inside the chrysalis enzymes dissolve most caterpillar into soup, keeping tiny pockets called imaginal discs; they drink the soup and build wings, legs and compound eyes. Stranger still, some moths remember dangers learned as caterpillars — becoming a butterfly does not erase everything.
难度 进阶 · 适合 小学低段(6-8)
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
#变态发育 #蛹 #成虫盘
蚂蚁排队搬东西,它们是怎么商量好的?
How do ants agree to march in lines carrying things together?
蚂蚁会留下看不见的气味小路!走在前面的蚂蚁边走边洒气味,后面的伙伴闻着味道跟上来,队伍越排越长。这就像在地上画了一条只有蚂蚁能看见的隐形箭头。
Ants leave invisible smell trails! Scouts drip scent as they walk and friends follow the fragrance, forming long lines. It is like drawing arrows only ants can see.
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
#蚂蚁 #气味路线 #合作
萤火虫的光为什么不发热?冷光是什么原理?
Why is firefly light cold? How does bioluminescence work?
灯泡发光靠把金属烧到白热,九成能量变成热浪费掉;萤火虫走的是化学路线:荧光素在荧光素酶催化下与氧气反应,能量几乎全部转化为光子,效率接近百分之百,所以叫冷光。不同种类的萤火虫用闪光频率当身份证,雄雌对上暗号才能约会——每种光的节奏都是专属密码。
Bulbs glow by heating metal white-hot, wasting ninety percent as heat. Fireflies go chemical: luciferin reacts with oxygen under luciferase enzyme, converting nearly all energy into photons — cold light near perfect efficiency. Different species flash their own rhythm as ID code; males and females must match signals before dates.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Wilson 与 Hastings,《Bioluminescence: Living Lights, Lights for Living》,Harvard University Press,2013
T. Wilson and J. W. Hastings, Bioluminescence: Living Lights, Lights for Living, Harvard University Press, 2013
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-0-674-07191-9 (2013, Harvard UP)
#生物荧光 #荧光素酶 #物种识别