On the basis of distribution of yolk the eggs are of following types:
(i) Homolecithal: Evenly distributed yolk.
(ii) Telolecithal: Most of the yolk near the vegetal pole, cytoplasm and nucleus lie near animal pole.
(iii) Centrolecithal: Centrally placed yolk surrounded by cytoplasm.

Correct Option: B

On the basis of distribution of yolk the eggs are of following types:
(i) Homolecithal: Evenly distributed yolk.
(ii) Telolecithal: Most of the yolk near the vegetal pole, cytoplasm and nucleus lie near animal pole.
(iii) Centrolecithal: Centrally placed yolk surrounded by cytoplasm.

Pattern of cleavage.

Correct Option: A

Pattern of cleavage.

Different types of segmentation or cleavages are found in animals depending upon the amount of yolk & its distribution: Holoblastic: Complete division. Meroblastic: Division occurs only in cytoplasm but not in yolk. eg. fishes.

Correct Option: B

Different types of segmentation or cleavages are found in animals depending upon the amount of yolk & its distribution: Holoblastic: Complete division. Meroblastic: Division occurs only in cytoplasm but not in yolk. eg. fishes.

It is the small slit like opening on the dorsal side of gastrocoel also known as dorsal lip.

Correct Option: B

It is the small slit like opening on the dorsal side of gastrocoel also known as dorsal lip.

During cleavage size of cells do not increase (in fact the resultant blastomeres are smallest in size, because size of embryo doesn’t increase and mitosis occurs repeatedly).

Correct Option: B

During cleavage size of cells do not increase (in fact the resultant blastomeres are smallest in size, because size of embryo doesn’t increase and mitosis occurs repeatedly).