Question

Human egg is

• A. Telolecithal
• B. Megalecithal
• C. Alecithal
• D. Centrolecithal

Answer 1

Answer: (C)

Alecithal

Human egg is very small and contains very less amount of yolk and is known as alecithal egg.

Macrolecithal or megalecithal eggs contain huge amount of yolk as compared to the cytoplasm. The egg size may be small or large. Such type of eggs are found in teleost fishes, reptiles, birds and eggs laying mammals.

In centrolecithal eggs, yolk is concentrated in the interior of egg and is surrounded by a thin layer of cytoplasm on all its sides such as in insects and many arthropods.

In telolecithal eggs yolk is abundant and is concentrated in one hemisphere of egg. Due to the uneven distribution of yolk, such eggs have animal pole with less yolk and vegetal pole with abundant yolk as in case of frog.

So, the correct answer is 'Alecithal'