7月30日
小马分类上---------生物学—第七篇(蜕化)
错误的,意识中不记得的,没有听清楚的,去掉的
听写:
Higher animals like dogs, horses even human beings look like their parents when they are born. there are some minor changes that crive(occur as) these animals grow.
1 k9 E) x7 } ^/ bBut the basic form and the structure stay the same. Now this is called direct development, which is quite different from minomosiphis (metamorphosis蜕化). When lower animals like ants, flies, or therchants(sea urchins) a merch(emerge) from their eggs, they don't look at all like their parents. Only after a theory(series) of amajor changes a few day(do they) take on the characteristics of their parents. Butterflies and moths provide the best examples of what biologists called complete metamorphosis because they pass through four distinct stages of extreme changes. You(use) know demonstration(Here is the illustration) of a butterfly at each of the four stage of complete metamorphosis.
The first stage is the egg. Butterflies usually lay their eggs on plants, and these plants provide food when they transform into the larva, the second stage. After that montain of(about months in)this stage,a butterfly larva has been in(spins) the cocoon of silk around itself. A larva in the cocoon is also called a pupa, so this is known as the pupae8 K9 L2 g. L8 x* n
stage. The pupae
# `/ P6 {, F3 `! mstage appeared(is the period of)) U- K) x/ R: @4 \; r7 J0 d4 C8 n6 \
inactivity, when larva structure evolve into adults structures. Depending on the species, the pupae
9 \; p% `# o% E3 T Istage can last and wear(anywhere) from a few days to several months. When a pupa finally mature into an adult butterfly, it pushes its way out of its cocoon and cross onto a twig or trigling(tree land) and pons(pumps打气)' ^- _8 N# V, G. a' E
blood into the trunk and wings until they are full size and strong.
0 |: J: F) B) J/ J M0 i- B" BNow some insects, like grasshoppers and roaches have only three stages, egg, larva and adults, when an animal escape(skip) the pupae stage, it's called incomplete metamorphosis. It's not only insects that undergo metamorphosis. Frogs and tods(toads蟾蜍) are the most well known examples of other form changing animals. Frogs lay the eggs in water, and the eggs hatch into teples(tadpole蝌蚪),a tadpole looks more like a little fish because it has tail and no legs ,but it gradually loses its tail and it develops into a four-leg frog
基本听懂了!!!!感动ing~~~希望不是幻觉~~~~~~~~
笔记:(蓝色听写之后的补充修正,粉色对答案以后修整)
高级动物比如狗,马,甚至人类,出生就和父母长的差不多,可能长大后会有一些变化,但是基本架构是不变的。这种叫做:direct development
1、低级动物比如蝴蝶,蚂蚁等动物出生就是卵状,和父母完全不一样,蝴蝶和Moth基本有四个阶段的转化:eggs,larva,pupae,adults---------------complete minomosiphis
eggs: 蝴蝶把卵产在植物上,这样植物可以提供食物,于是egg长成larva
larva: 在这个阶段,蝴蝶的进化会吐丝作茧。
pupae: 蝴蝶需要几天甚至几个月变成adults
adults: 成熟期,蝴蝶破茧而出,变强壮
2、另外有一些虫子roches,只有三个阶段:eggs,larva,adults
: E' ^) K0 s) g& g3 }6 F-------------------没有pupae阶段的叫incomplete minomosiphis
3、青蛙和蟾蜍(猜想)把卵产在水里,然后变成蝌蚪,解释蝌蚪(像鱼),然后蝌蚪长两条腿,然后变成四腿青蛙。
About, here 的辩音
metamorphosis蜕化
urchin6 O% n& R# @+ z4 f/ g% J* R# C
顽童' X. w! Y0 @5 \1 F
sea urchin???
Spin9 p% {* }4 @2 W. j
使旋转,杜撰
pump
6 y" C0 W9 p! I: l# R; x P: }打气
tadpole蝌蚪
答案:CAACB 13245