Which of the following statements is false?
I. Pollen grains represents immatured male gametophyte
II. In angiosperms partially developed male gametophyltes are pollinated
III. Generattive cell is siponogenous while vegetative cell is spermatogenous
IV. Formation and differentiation of pollen grains is called microsporogenesis
V. Hay fever is a polle allergy
VI. Pollen grains of someplants produce severe allergy and respiratory or bronchial diseases
VII. Pollen grains are poor in nutrients.

Options

A. I and VI
B. III and VII
C. IV and V
D. VI and VII

Answer

To determine which of the statements is false, let's analyze each statement one by one:

1. **Statement I**: "Pollen grains represent immature male gametophyte."
- This statement is **true**. Pollen grains are indeed immature male gametophytes that will develop into male gametes.

2. **Statement II**: "In angiosperms, partially developed male gametophytes are pollinated."
- This statement is also **true**. Pollen grains, which are partially developed male gametophytes, are transferred during pollination.

3. **Statement III**: "Generative cell is siphonogenous while vegetative cell is spermatogenous."
- This statement is **false**. The generative cell is actually spermatogenous because it divides to form male gametes, while the vegetative cell is siphonogenous as it forms the pollen tube.

4. **Statement IV**: "Formation and differentiation of pollen grains is called microsporogenesis."
- This statement is **true**. The process of forming and differentiating pollen grains is indeed called microsporogenesis.

5. **Statement V**: "Hay fever is a pollen allergy."
- This statement is **true**. Hay fever is a common allergic reaction caused by pollen.

6. **Statement VI**: "Pollen grains of some plants produce severe allergy and respiratory or bronchial diseases."
- This statement is **true**. Certain pollen grains can cause significant allergic reactions and respiratory issues.

7. **Statement VII**: "Pollen grains are poor in nutrients."
- This statement is **false**. Pollen grains are actually rich in nutrients, which is why they are sometimes consumed for their health benefits.

### Conclusion:
The false statements are **Statement III** and **Statement VII**. However, since the question asks for which statement is false, the most relevant answer is **Statement III**.

### Final Answer:
The false statement is **Statement III**.