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In Spirogyra sexual reproduction occurs ...

In Spirogyra sexual reproduction occurs through
(a) Conjugation
(b) Physiological isogamy
(c) Morphological anisogamy
(d) Oogamy

A

Conjugation

B

Physiological isogamy

C

Morphological anisogamy

D

Oogamy.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the sexual reproduction process in Spirogyra, we will analyze the options provided and identify the correct answer step by step. ### Step 1: Understand the Question The question asks about the method of sexual reproduction in Spirogyra. We need to evaluate the given options to determine which one correctly describes this process. ### Step 2: Review the Options The options provided are: (a) Conjugation (b) Physiological isogamy (c) Morphological anisogamy (d) Oogamy ### Step 3: Analyze Each Option - **Option (a) Conjugation**: This is a known method of sexual reproduction in Spirogyra where two filaments of opposite mating types come together and fuse, leading to the formation of a zygospore. - **Option (b) Physiological isogamy**: This refers to the fusion of gametes that are morphologically similar but may differ in physiological traits. This is not the method used by Spirogyra. - **Option (c) Morphological anisogamy**: This involves the fusion of two dissimilar gametes (male and female). Spirogyra does not reproduce this way. - **Option (d) Oogamy**: This is a form of sexual reproduction involving a large non-motile egg and a small motile sperm. Spirogyra does not exhibit this type of reproduction. ### Step 4: Identify the Correct Answer Based on the analysis, the correct answer is **(a) Conjugation**. In Spirogyra, sexual reproduction occurs through conjugation, where two opposite strains fuse to form a zygospore. ### Final Answer The correct answer is **(a) Conjugation**. ---
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