Question

Isogamous condition with non-flagellated gametes is found in?

• A. Spirogyra
• B. Chlamydomonas
• C. Fucus
• D. Volvox

Answer 1

The correct option is A

Spirogyra

The correct option is A.

Explanation of the correct option:

Option A:

1. Isogamy is found in Spirogyra in which both male and female gametes are non-motile.
2. Isogamy is a form of sexual reproduction, which involves the fusion of morphologically similar gametes, having similar shapes and sizes.
3. Spirogyra has gametes that are similar in size (isogamous) and are non-flagellated.

Explanation of incorrect option:

Option B:

1. Chlamydomonas show all the conditions called isogamy, isogamy, and anisogamy.

Option C:

1. Oogamy is present in Fucus.

Option D:

1. In Volvox, the Oogamous condition occurs because the egg is immobile and the sperm is motile.

Final answer: Isogamous condition with non-flagellated gametes is found in spirogyra.