Which of the following is a correct sentence ?

Options

A. In gymnosperms endosperm is diploid and in angiosperms it is haploid.
B. In gymnosperms endosperm is haploid and in angiosperms it is triploid.
C. In gymnosperms endosperm is haploid and in angiosperms it is diploid.
D. Endosperm is triploid in both gymnosperm and angiosperms .

Answer

To solve the question regarding the correct statement about the endosperm in gymnosperms and angiosperms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Endosperm**:
- Endosperm is the tissue produced in the seeds of flowering plants (angiosperms) and some non-flowering plants (gymnosperms) that provides nutrition to the developing embryo.

2. **Identify the Characteristics of Gymnosperms**:
- Gymnosperms are non-flowering plants.
- The endosperm in gymnosperms is typically haploid (n), as it develops from the female gametophyte.

3. **Identify the Characteristics of Angiosperms**:
- Angiosperms are flowering plants.
- The endosperm in angiosperms is triploid (3n), formed by the fusion of one male gamete with two polar nuclei during fertilization (triple fusion).

4. **Evaluate the Statements**:
- **Statement 1**: "In gymnosperm the endosperm is diploid and in angiosperm it is haploid."
- This is incorrect. Gymnosperms have haploid endosperm.
- **Statement 2**: "Gymnosperm endosperm is haploid and angiosperm it is triploid."
- This is correct. Gymnosperms have haploid endosperm, while angiosperms have triploid endosperm.
- **Statement 3**: "Gymnosperm endosperm is haploid, angiosperm it is diploid."
- This is incorrect. Angiosperms have triploid endosperm.
- **Statement 4**: "Endosperm is triploid in gymnosperm."
- This is incorrect. Gymnosperms have haploid endosperm.

5. **Conclusion**:
- The correct statement is **Statement 2**: "Gymnosperm endosperm is haploid and angiosperm it is triploid."

### Final Answer:
The correct sentence is: "Gymnosperm endosperm is haploid and angiosperm it is triploid."