Question

Refer the following figures and identify the type of gametes $(A,B$ and $C)$ respectively.

• A. Heterogametes, isogametes, homogametes
• B. Isogametes, homogametes, heterogametes
• C. Homogametes, isogametes, Heterogametes
• D. Homo/Isogametes, heterogametes, heterogametes

Answer 1

The correct option is D Homo/Isogametes, heterogametes, heterogametes

A. Homogametes: In some lower plants(in some algae), the two gametes are morphologically similar i.e., they appear similar in size, shape and activity. Such gametes are called isogametes( or homogametic). It is not possible to distinguish them into male and female gametes.

B. In the majority of sexually reproducing organisms the male and female are morphologically distinct( heterogametes). In such organisms, the male gametes are called microgametes, or spermatozoa, and female gametes termed macrogametes or ova. The male gametes are mostly minute and motile and female gametes are usually large, non-motile.

So, the correct answer is 'Homo/ Isogametes, heterogametes, heterogametes'.