Human Reproduction Question 62
62. Human eggs are
(a) Alecithal
(b) Microlecithal
(c) Mesolecithal
(d) Macrolecithal
Show Answer
Answer : a
Hints & Solutions
(a) Eggs are of 4 types regarding the amount of yolk present in them : (i) Alecithal Egg : Almost free of yolk eg. most mammals like man. (ii) Microlecithal Egg : Very small amount of yolk eg. Branchiostoma. (iii) Mesolecithal Egg : Moderate amount of yolk eg. Frog’s egg (iv) Macrolecithal Egg : Large amount of yolk eg. Reptiles, birds and egg-laying mammals.
