Biology
DkirkendollDk2
2016-04-24 09:34:12
Which of these characteristics first developed in reptiles? amniotic egg four-legged body animals with lungs. skull and vertebral column scales on skin?
ANSWERS
kins
2016-04-24 11:55:48

Am amniotic egg is first developed in the reptiles.  The membrane and shell make a protective membrane that can provide a safe environment for the cells to divide, and embryo to develop. Animals having an amniotic shell are called as amniotes. The other body parts develop later on.

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