Double endosperm is found in

Options

A. wheat
B. rice
C. pea
D. coconut

Answer

**Step-by-Step Solution:**

1. **Understanding Double Endosperm**: Double endosperm refers to the presence of two types of endosperm formed during the fertilization process in flowering plants. This phenomenon is closely related to the process of double fertilization.

2. **Double Fertilization Process**: In flowering plants, double fertilization involves the fusion of one sperm cell with the egg cell (forming the zygote) and the fusion of another sperm cell with two polar nuclei (forming the endosperm). This results in the formation of a triploid endosperm (3n) which serves as a nutritive tissue for the developing embryo.

3. **Identifying the Plants**: The question asks to identify which of the given options (wheat, rice, pea, or coconut) exhibits double endosperm.

4. **Analyzing Each Option**:
- **Wheat**: Typically has a single endosperm.
- **Rice**: Also has a single endosperm.
- **Pea**: Generally has a single endosperm as well.
- **Coconut**: Known for having a double endosperm due to the presence of both a solid and a liquid endosperm.

5. **Conclusion**: Based on the analysis, the correct answer is **coconut**, as it is the only option that exhibits double endosperm.

**Final Answer**: Double endosperm is found in **coconut**.

---