Function of macronucleus is

Options

A. to control vegetative function
B. to control reproduction
C. both the above
D. none of the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Macronucleus**: The macronucleus is a type of nucleus found in ciliate protozoans, such as paramecium. It is large and ellipsoidal in shape.

2. **Nuclear Dimorphism**: Ciliate protozoans exhibit nuclear dimorphism, meaning they have two types of nuclei: the macronucleus and the micronucleus.

3. **Function of Macronucleus**: The primary function of the macronucleus is to control vegetative functions, which include all metabolic activities necessary for the growth and maintenance of the cell.

4. **Importance of Macronucleus**: The macronucleus is essential for the survival of the organism; without it, the cell cannot perform its vital functions.

5. **Distinction from Micronucleus**: The micronucleus, on the other hand, is responsible for reproductive functions. It is smaller and less numerous compared to the macronucleus.

6. **Conclusion**: Therefore, the correct answer to the question regarding the function of the macronucleus is that it controls vegetative functions.

**Final Answer**: The function of the macronucleus is to control vegetative functions.

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