In the development of Angiosperms, generally

Options

A. The development of endosperm starts before the development of embryo.
B. The development of endosperm starts after the development of an embryo
C. The development of endosperm starts along with the development of embryo
D. The endosperm disappears before the development of embryo starts.

Answer

To solve the question regarding the development of Angiosperms, we will analyze the process step by step.

### Step-by-Step Solution:

1. **Understanding Angiosperm Development**:
Angiosperms, or flowering plants, undergo a specific developmental process that includes fertilization, zygote formation, and endosperm development.

2. **Fertilization**:
During fertilization, the male gamete (sperm) fuses with the female gamete (egg cell) to form a zygote. Additionally, a second fertilization event occurs where the sperm fuses with the two polar nuclei (also known as the secondary nucleus) to form the primary endosperm nucleus.

3. **Formation of the Primary Endosperm Nucleus**:
The fusion of the polar nuclei with the sperm results in the formation of the primary endosperm nucleus, which is triploid (3n). This nucleus is crucial as it will develop into the endosperm.

4. **Development of Endosperm**:
The primary endosperm nucleus undergoes repeated divisions to form the endosperm tissue. This tissue serves as a food reserve for the developing embryo.

5. **Development of the Embryo**:
The embryo starts developing after the endosperm has begun to form. The endosperm provides the necessary nutrients for the growing embryo.

6. **Conclusion**:
Based on the above steps, we can conclude that the development of the endosperm starts before the development of the embryo. This is crucial because the embryo relies on the endosperm for nourishment during its early stages of development.

### Final Answer:
The correct statement regarding the development of Angiosperms is that **the development of endosperm starts before the development of the embryo**.