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 determine which option is not correct for post-fertilization changes, let's analyze each option step by step.

### Step 1: Understand Post-Fertilization Changes
Post-fertilization changes refer to the events that occur after fertilization in flowering plants (angiosperms). 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 Andosperm Nucleus Formation**:
- After double fertilization, the central cell (diploid secondary nucleus) fuses with a male gamete to form the primary andosperm nucleus. This is indeed a correct statement as it leads to the formation of endosperm, which nourishes the developing embryo.

2. **Development of Ovules into Seeds and Ovaries into Fruits**:
- Following fertilization, ovules develop into seeds and the ovary develops into a fruit. This statement is also correct.

3. **Stalk of Seed (Funicle)**:
- The funicle is the stalk that attaches the ovule to the ovary wall. This statement is correct as well.

4. **Integuments and Pericarp**:
- Integuments are the protective layers surrounding the ovule, which develop into seed coats after fertilization. The pericarp, on the other hand, is the part of the fruit that develops from the ovary wall. The statement regarding the relationship between integuments and pericarp is incorrect in the context provided.

### Conclusion
The option that is not correct for post-fertilization changes is the one that incorrectly relates integuments and pericarp.

### Final Answer
The correct option that is not correct for post-fertilization changes is **Option 4**.

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