A) Rabbit- Microlacithal, isolecithal
B) Frog- Mesolecithal, centrolecithal
C) Human- Mesolecithal, telolecithal
D) Birds- Macrolecithal, telolecithal
Correct Answer: C
Solution :
Human egg is alecithal (without yolk) or microlecithal (small amount of yolk). Isolecithal or Homolecithal egg have homogeneously distributed yolk all over the ooplasm, eg, protochordates and echinoderms. Mesolecithal egg has moderate amount of yolk, eg, frog and other amphibians. In centrolecithal eggs, yolk is concentrated in the centre and the cytoplasm is peripheral, eg, insect egg. Macrolecithal or megalecithal or polylecithal Eggs having a large amount of yolk, eg, reptilian and avian egg. Telolecithal eggs having yolk concentrated in one half, eg, amphibian egg.
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