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

### Step-by-Step Solution:

1. **Understanding Angiosperm Development**: Angiosperms undergo a unique process called double fertilization, which is critical for their reproductive cycle. This involves two key events: syngamy and triple fusion.

2. **Syngamy**: In this process, one male gamete fuses with the egg cell to form a zygote. This is the first fertilization event and leads to the formation of the embryo.

3. **Triple Fusion**: The second male gamete fuses with the central cell (which has a ploidy of 2N) to form the endosperm, which is a triploid tissue (3N). This process occurs after syngamy.

4. **Role of Endosperm**: The endosperm serves as a nutritive tissue that provides essential nutrients to the developing zygote (embryo). It is crucial for the embryo's growth and development.

5. **Sequence of Development**: In angiosperms, the development of the endosperm occurs before the development of the embryo. This ensures that by the time the embryo begins to grow, it has a sufficient supply of nutrients from the endosperm.

6. **Conclusion**: Therefore, the statement that "the development of endosperm starts before the development of the embryo" is correct. Conversely, the statement that "the development of endosperm starts after the development of the embryo" is incorrect.

### Final Answer:
The correct statement is that the development of endosperm starts before the development of the embryo in angiosperms.

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