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siniylev [52]
3 years ago
11

Which of these characteristics first developed in reptiles? amniotic egg four-legged body animals with lungs. skull and vertebra

l column scales on skin?
Biology
1 answer:
beks73 [17]3 years ago
6 0
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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