Choose the correct statements with reference to reproduction in paramecium
(a) Micronucleus divides by mitosis and macronucleus by amitosis
(b) Micronucleus is polyploid and macronucleus is diploid
(c ) After karyokinesis, parent cell divides into two daughter cells, anterior proter and posterior opisthe
(d) It undergoes transverse binary fission during favourable conditions.

Options

A. (a),(b) and (d)
B. (b),(c ) and (d)
C. (a), (c ) and (d)
D. (a),(b) and ( c).

Answer

To solve the question regarding reproduction in Paramecium, we need to analyze each statement provided and determine their correctness based on the characteristics of Paramecium's reproduction.

### Step-by-Step Solution:

1. **Understanding the Nuclei in Paramecium**:
- Paramecium has two types of nuclei: the macronucleus and the micronucleus.
- The macronucleus is large and polyploid, controlling metabolic activities.
- The micronucleus is smaller and diploid, primarily involved in reproduction.

2. **Analyzing Statement (a)**:
- Statement (a) claims: "Micronucleus divides by mitosis and macronucleus by amitosis."
- This statement is **correct**. The micronucleus undergoes mitosis, while the macronucleus divides by amitosis.

3. **Analyzing Statement (b)**:
- Statement (b) claims: "Micronucleus is polyploid and macronucleus is diploid."
- This statement is **incorrect**. The micronucleus is diploid, and the macronucleus is polyploid.

4. **Analyzing Statement (c)**:
- Statement (c) claims: "After karyokinesis, parent cell divides into two daughter cells, anterior proter and posterior opisthe."
- This statement is **correct**. After karyokinesis, the cell divides transversely into two parts: the anterior (proter) and the posterior (opisthe).

5. **Analyzing Statement (d)**:
- Statement (d) claims: "It undergoes transverse binary fission during favorable conditions."
- This statement is **correct**. Paramecium reproduces asexually by binary fission, specifically through transverse fission during favorable conditions.

6. **Conclusion**:
- The correct statements regarding reproduction in Paramecium are (a), (c), and (d).

### Final Answer:
The correct statements are:
- (a) Micronucleus divides by mitosis and macronucleus by amitosis.
- (c) After karyokinesis, parent cell divides into two daughter cells, anterior proter and posterior opisthe.
- (d) It undergoes transverse binary fission during favorable conditions.