Which of the following statements is correct regarding triple fusion?
(I) It is fusion of nucleus of a male gamete with the diploid secondary nucleus
(II) It results in formation of endosperm
(III) It was 1st discovered by Guignard

Options

A. Only (II) and (III) are correct
B. Only (I) and (III) are correct
C. Only (I) and (II) are correct
D. All are correct

Answer

To determine which statements regarding triple fusion are correct, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Understanding Triple Fusion**:
- Triple fusion is a process that occurs in flowering plants (angiosperms) during fertilization. It involves the fusion of one male gamete with two polar nuclei (the diploid secondary nucleus) in the embryo sac.

2. **Evaluating Statement I**:
- **Statement I**: "It is fusion of nucleus of a male gamete with the diploid secondary nucleus."
- This statement is **correct**. In triple fusion, the haploid nucleus of a male gamete fuses with the diploid secondary nucleus (which is formed by the fusion of two polar nuclei).

3. **Evaluating Statement II**:
- **Statement II**: "It results in formation of endosperm."
- This statement is also **correct**. The fusion of the male gamete with the diploid secondary nucleus results in the formation of a triploid primary endosperm nucleus, which eventually develops into the endosperm, a tissue that nourishes the developing embryo.

4. **Evaluating Statement III**:
- **Statement III**: "It was 1st discovered by Guignard."
- This statement is **partially correct**. While Guignard did contribute to the understanding of triple fusion, it was independently discovered by both Guignard and another scientist, Navaschin. Therefore, stating it was "1st discovered by Guignard" is misleading as it does not acknowledge Navaschin's contribution.

5. **Conclusion**:
- Since Statement I and Statement II are correct, and Statement III is misleading, the correct answer regarding the statements about triple fusion is that Statements I and II are correct, while Statement III is not entirely accurate.

### Final Answer:
- **Correct Statements**: I and II are correct; III is misleading.