In spriogyra lateral conjugation takes place in the cells of

Options

A. Two filaments of different species
B. Two filaments of same species
C. Same filament
D. Both A and B.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about lateral conjugation in Spirogyra, specifically which cells it takes place in.

2. **Identifying the Types of Conjugation:**
In Spirogyra, sexual reproduction occurs through a process called conjugation, which is divided into two types: lateral conjugation and scleriform conjugation.

3. **Defining Lateral Conjugation:**
Lateral conjugation occurs within a single filament of Spirogyra. This means that the conjugation process involves cells from the same filament rather than from different filaments.

4. **Defining Scleriform Conjugation:**
In contrast, scleriform conjugation involves two different filaments. During this process, male gametes from one filament are transferred to another filament through a conjugation tube.

5. **Conclusion:**
Since lateral conjugation occurs within the same filament, the correct answer to the question is that lateral conjugation takes place in the cells of the same filament.

6. **Final Answer:**
Therefore, the answer is option 3: "same filament."

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