Question

Early embryonic stage that follows blastula is

• A. Morula
• B. Amphiblastula
• C. Radula
• D. Gastrula

Answer 1

The correct option is D Gastrula

Blastula is a 64 celled stage which has a cavity of blastocoel. Gastrulation is the process of formation of the gastrula from the blastula.

There is a mass cellular movement which leads to the formation of different germ layers during gastrulation. The morula is the initial 16 celled stage and amphiblastula is not an embryonic stage but a larval stage of sponges.

So, the correct option is 'Gastrula'.