In the process of embryonic development, which stage comes first?
a. gastrula
b. blastocyst
c. morula
d. blastocoel

Ans.

Embryogenesis or embryonic development is defined as a process that involves formation and development of a zygote into embryo. The fertilized egg or zygote undergoes mitotic divisions through cleavage and divides rapidly.

The first stage of embryonic development is known as morula that represents a 16 cells consisting solid ball-like structure. The morula later develops into blastula.

Thus, the correct answer is option C). 'morula.'

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