Which of the following option is not correct for the post fertilization changes ?

Options

A. PEN - Endosperm
B. Ovary = Fruit
C. Funicle = stalk of seed
D. Integument = Pericarp

Answer

To solve the question regarding which option is not correct for post-fertilization changes, we will analyze each option provided in the context of plant reproduction.

**Step 1: Understand Post-Fertilization Changes**
Post-fertilization changes refer to the transformations that occur in the flower after fertilization has taken place. This includes the development of the zygote into an embryo, the ovule into a seed, and the ovary into a fruit.

**Step 2: Analyze Each Option**
1. **Primary Endosperm Nucleus**: This is formed by the fusion of one male gamete with the two polar nuclei (triple fusion). It develops into the endosperm, which nourishes the developing embryo. This statement is correct for post-fertilization changes.

2. **Ovary to Fruit**: The ovary of the flower develops into the fruit after fertilization. This statement is also correct for post-fertilization changes.

3. **Funicle (Stock of Seed)**: The funicle is the stalk that attaches the ovule to the placenta in the ovary. After fertilization, the ovule develops into a seed, and the funicle remains part of the seed structure. This statement is correct for post-fertilization changes.

4. **Integument to Pericarp**: The integuments of the ovule develop into the seed coat (testa and tegmen) after fertilization, not into the pericarp. The pericarp is formed from the ovary wall. This statement is incorrect for post-fertilization changes.

**Conclusion**: The option that is not correct for post-fertilization changes is **Integument to Pericarp**.

### Final Answer:
The option that is not correct for post-fertilization changes is **Integument to Pericarp**.

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