Auxospores or rejuvenescent cells are characteristic of which of the followings ?

Options

A. Dinoflagellates
B. Diatoms
C. Zooflagellates
D. Sporozoans

Answer

**Step-by-Step Solution:**

1. **Understanding Auxospores**: Auxospores are specialized cells that play a critical role in the reproduction of certain unicellular organisms. They are particularly important for maintaining cell size during reproduction.

2. **Identifying the Organism**: The organism associated with auxospores is diatoms. Diatoms are a group of microalgae characterized by their unique silica cell walls and are known for their role in aquatic ecosystems.

3. **Function of Auxospores in Diatoms**: In diatoms, auxospores are produced during cell division. When diatoms divide, they can become smaller in size, and auxospores help to restore their original size by forming two larger vegetative cells.

4. **Rejuvenation Process**: The term "rejuvenation" refers to the process by which these auxospores help in renewing or restoring the cell size of diatoms. This is essential for their growth and reproduction.

5. **Conclusion**: Based on the characteristics and functions of auxospores, it can be concluded that they are specifically associated with diatoms.

6. **Final Answer**: Therefore, the answer to the question is option B, diatoms.

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