In gymnosperms, endosperm is formed

Options

A. after fertilization
B. after the development of embryo
C. before fertilization
D. At the time of fertilization

Answer

To answer the question regarding when endosperm is formed in gymnosperms, let's break it down step by step:

### Step-by-Step Solution:

1. **Understanding Gymnosperms**:
- Gymnosperms are a group of seed-producing plants where the seeds are not enclosed within an ovary. The term "gymnosperm" means "naked seeds".

2. **Endosperm Definition**:
- Endosperm is a tissue that provides nutrition to the developing embryo in seeds. It is crucial for seed development and growth.

3. **Formation Timing**:
- In gymnosperms, the endosperm is haploid, meaning it has one set of chromosomes. This is different from angiosperms, where the endosperm is typically triploid (three sets of chromosomes).

4. **Pre-Fertilization vs. Post-Fertilization**:
- In gymnosperms, the endosperm develops before fertilization occurs. This is in contrast to angiosperms, where the endosperm develops after fertilization.

5. **Conclusion**:
- Therefore, the correct answer to the question is that in gymnosperms, endosperm is formed **before fertilization**.