Which of the following sentences is true about the human egg?

(A) The human egg is known as an alecithal egg.

(B) The human n egg is known as a telolecithal egg.

(C) The human egg is known as a megalecithal egg.

(D) The human egg is known as the centrolecithal egg.

The Correct Answer is (A) The human egg is known as an alecithal egg.

Solution

The human egg is known as an alecithal egg because it consists of a negligible amount of yolk in the cytoplasm of the egg.

In zoology, based on the amount of yolk, distribution of yolk in the egg, type of eggshell and based on the development of the egg, eggs are classified into:

Alecithal egg

This is classified based on the amount of yolk present in an organism’s egg. In an alecithal egg, the amount of yolk present is of a minimal amount or is completely absent.

Telolecithal egg

This is classified based on the distribution of yolk. In a telolecithal egg, the yolk is present at one pole of the egg.

Megalecithal egg

This is classified based on the amount of yolk present in an organism’s egg. In a megalecithal egg, the amount of yolk content is enormous.

Centrolecithal egg

This is classified based on the distribution of yolk. In a centrolecithal egg, the yolk is present in the centre of the egg and is surrounded by a superficial layer.

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