Question

Q20: The germ layer that is absent in
ctenophore
O A Ectoderm
Ов Endoderm
O c Mesoderm
OD All of the above​

Answer 1

Answer:

ectoderm is the ans

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Answer 2

Explanation:

Ctenophores have ectoderm and endoderm

So, mesoderm is absent

i.e., option ---3