Identify the incorrect statements regarding the post-fertilization development.
I. Endosperm precedes embryo development.
II. Ovule develops into seed.
III. Ovary develops into fruit.
IV. Male gamete fuses with egg cell.
V. Primary endosperm nucleus is formed.

Options

A. I and II
B. III and IV
C. IV and V
D. I and III

Answer

To identify the incorrect statements regarding post-fertilization development, let's analyze each statement one by one:

1. **Endosperm precedes embryo development.**
- This statement is correct. In flowering plants, the endosperm is formed first through a process called triple fusion, and it provides the necessary nutrients for the developing embryo.

2. **Ovule develops into seed.**
- This statement is also correct. After fertilization, the ovule develops into a seed, which contains the embryo and the endosperm.

3. **Ovary develops into fruit.**
- This statement is correct as well. After fertilization, the ovary of the flower develops into the fruit, which protects the seeds.

4. **Male gamete fuses with egg cell.**
- This statement is correct. During fertilization, the male gamete (sperm) fuses with the egg cell (ovum) to form the zygote.

5. **Primary endosperm nucleus is formed.**
- This statement is correct. The primary endosperm nucleus is formed during the process of fertilization when the second male gamete fuses with two polar nuclei.

Now, let's summarize the findings:

- All the statements provided (I, II, III, IV, and V) are correct regarding post-fertilization development. Therefore, there are no incorrect statements in the options given.

**Final Answer: There are no incorrect statements regarding post-fertilization development.**