Endosperm of angiosperms is produced after fertilization of a male gamete with

Options

A. Antipodals
B. Synergids
C. Secondary nucleus
D. Oosphere.

Answer

To solve the question regarding the production of endosperm in angiosperms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Angiosperms**:
- Angiosperms are flowering plants that undergo a unique reproductive process involving double fertilization.

2. **Identify the Male Gametes**:
- In angiosperms, pollen grains contain two male gametes. When the pollen tube reaches the ovule, it releases these two male gametes.

3. **Recognize the Fertilization Events**:
- One male gamete fuses with the egg cell, resulting in the formation of the zygote. This process is known as fertilization or syngamy.
- The second male gamete fuses with the two polar nuclei (also known as the secondary nucleus) in the embryo sac.

4. **Define the Process of Triple Fusion**:
- The fusion of the second male gamete with the secondary nucleus is referred to as triple fusion. This process leads to the formation of the endosperm, which nourishes the developing embryo.

5. **Conclude with the Answer**:
- Therefore, the endosperm of angiosperms is produced after the fertilization of a male gamete with the secondary nucleus.

### Final Answer:
The endosperm of angiosperms is produced after fertilization of a male gamete with the secondary nucleus.

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