Which of the following statements about plants are correct. I Only flowering plants produce fruits. II. Only non-flowering plants have leaves. III. Flowering plants produce flowers when the conditions are right. IV The leaves of all plants have different size but similar shape

Options

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

Answer

To determine which statements about plants are correct, let's analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement I: Only flowering plants produce fruits.**
- **Analysis:** This statement is correct. Flowering plants, also known as angiosperms, produce flowers that contain ovaries. The ovary develops into fruit after fertilization, which contains seeds.
- **Conclusion:** This statement is **True**.

2. **Statement II: Only non-flowering plants have leaves.**
- **Analysis:** This statement is incorrect. Both flowering plants (angiosperms) and non-flowering plants (like ferns and conifers) have leaves. Therefore, it is not true that only non-flowering plants have leaves.
- **Conclusion:** This statement is **False**.

3. **Statement III: Flowering plants produce flowers when the conditions are right.**
- **Analysis:** This statement is correct. Flowering plants typically bloom when environmental conditions such as temperature, light, and moisture are suitable for reproduction. Immature plants may not produce flowers until they reach maturity and the right conditions are met.
- **Conclusion:** This statement is **True**.

4. **Statement IV: The leaves of all plants have different sizes but similar shapes.**
- **Analysis:** This statement is incorrect. While it is true that leaves can vary in size, they also vary significantly in shape depending on the species and their adaptation to different environments. Therefore, it is not accurate to say that all plants have leaves of similar shape.
- **Conclusion:** This statement is **False**.

### Final Conclusion:
- The correct statements are **I** and **III**. Therefore, the answer is that the correct statements about plants are **I and III**.