蜗牛到底有没有脚？

tc0025

根据朋友的说法是：蜗牛身体下面的那一粒粒的东西就是它的脚！

以我所知是没有…有也是退化了的，就好像鲸鱼的脚退化成尾巴那样！
因为它是靠身体的蠕动来移动，所以我认为是没有脚啦，就好像现在的科学课本上写无腿

但是朋友又争论说：它是没有腿 ＝ leg, 但并不代表没有脚 = foot / feet!!

向各位请教了！！！

assasin_cactus

o.O? 蜗牛曾几何时长了脚?? 它是靠身体的肌肉来蠕动的不是吗? 那个一粒一粒我就不清楚了.. 我也想知道那个一粒一粒的是什么

雨天之魂

The snail moves by creeping on a flat "foot" underneath the body.
The band of muscles in the foot contract and expand and this create a
kind of rippling movement that pushes the snail forward.
The "foot" has a special gland that produces a slimy mucus to make
a slippery track. You can often see these silvery tracks in the garden.
The slime comes out from the front and hardens when it comes
into contact with air. The snail is able to move on very
sharp pointed needles, knife, razors and vines without being injured
because the mucus-like secretion helps to protect its body.

The body of a snail consists of foot(sole),a head and a coiled visceral
mass that is located in the shell.
Movement takes place by means of expanding and extracting muscles
in the foot.This is clearly visible when you place a snail on a glass
surface,and look from below.Mucus glands located in the anterior(front)
part of the foot secrete mucus.

如果直接照英文字意翻译,  foot = 脚, 那么蜗牛是有脚的.

可是我们一般上把脚当成是四肢(appendage)的两肢.
蜗牛的脚部并不是一般动物的那种突出物;
主要还是可以蠕动, 加上可以分泌液体的肌肉噢.

tc0025

谢谢解答…

我可不敢抓蜗牛来研究…也没办法看那个一粒粒的东西是什么模样！

其实是侄女的科学老师告诉他们说蜗牛有脚…是一年级科学哦！好深奥！

DeadCow

为何这问题会出现在数学里？
应该转去生物吧。。