Only the egg yolk is called an egg in biology.Correct?
Solution:
Among animals which produce eggs, yolk is the nutrient-bearing portion of the egg whose primary function is to supply food for the development of the embryo. Some types of egg contain no yolk whereas some eggs contain yolk.
Among animals which produce eggs, yolk is the nutrient-bearing portion of the egg whose primary function is to supply food for the development of the embryo. Some types of egg contain no yolk whereas some eggs contain yolk.