Biology, 12.10.2019 00:30 holasoykawaii10

Ablastula is
a. the innermost germ layer.
b. a hollow ball of cells in an embryo.
c. a digestive organ.
d. a stage of development before a zygote.

Answers: 3

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Ablastula is
a. the innermost germ layer.
b. a hollow ball of cells in an embryo.