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2.Human Reproduction
normal
Holoblastic cleavage may occur in eggs which are
A
Oligolecithal only
B
Mesolecithal only
C
Macrolecithal only
D
Oligolecithal and mesolecithal both
(AIIMS-1987)
Solution
(d)In oligolecithal eggs viz. Amphioxus, holoblastic cleavage takes place and in mesolecithal eggs viz. fishes and amphibians, unequal holoblastic cleavage (except $I$ and $II$) is found.
Standard 12
Biology