A) macrolecithal
B) alecithal
C) mesolecithal
D) telolecithal
Correct Answer: A
Solution :
The egg laying mammals belong to subclass prototheria. The egg of prototherians are macrolecithal. Such egg contains larg amount of yolk other examples are insects, reptiles, birds. The mesolecithal eggs contain moderate amount of yolk e.g., lungfishes, frog etc. In telolecithal egg the yolk is concentrated in the vegetal half e.g., egg of amphibians: The yolk is almost absent in alecithal egg.
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