Which of the following is the wrong function of the corresponding part in the angiosperm plant ?

Options

A. Nucellus= Nourishment of developing embryo sac
B. Pollen kit = protection of pollen grains from UV rays
C. Filiform apparatus = Secreting chemicals for attracting the pollen tube towards micropyle of ovule
D. Pollen tube = Formed by generative nucleus

Answer

To solve the question regarding the wrong function of the corresponding part in an angiosperm plant, we will analyze each option provided and determine if the function described is correct or incorrect.

### Step-by-Step Solution:

1. **Option A: Nucellus**
- **Function:** Provides nourishment to the developing embryo sac.
- **Analysis:** The nucellus is indeed rich in cytoplasm and is located outside the embryo sac, providing essential nutrients to it. This statement is correct.

2. **Option B: Pollen Kit**
- **Function:** Helps in the adhesion of pollen grains to pollinators and protects them from UV rays.
- **Analysis:** The pollen kit (or exine) does serve to protect the pollen grain and aids in its attachment to pollinators, facilitating pollination. This statement is also correct.

3. **Option C: Filiform Apparatus**
- **Function:** Secretes chemicals to attract the pollen tube toward the micropyle of the ovule.
- **Analysis:** The filiform apparatus, located in the synergids, does secrete substances that guide the pollen tube to the ovule's micropyle. This statement is correct.

4. **Option D: Pollen Tube Formation**
- **Function:** Formed by the generative nucleus.
- **Analysis:** This statement is incorrect. The pollen tube is formed by the vegetative nucleus, not the generative nucleus. The generative nucleus divides to form sperm cells that participate in fertilization.

### Conclusion:
The incorrect statement is **Option D**: "The pollen tube formed by the generative nucleus."

### Final Answer:
**Option D** is the wrong function of the corresponding part in the angiosperm plant.

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