Choose the incorrect statement .

Options

A. The leaves in gymnosperms are well -adapted to withstand extremes of temperature , humidity and wind.
B. In Cycas, male cone and megasporophylls are borne on the same tree but it pinus male cones and female cones are borne on different trees.
C. Pollination is gymnosperms is Carried by air.
D. In gymnosperms male and female gametophyte do not have independent free-living existence.

Answer

To solve the question "Choose the incorrect statement," we will analyze each of the provided statements regarding gymnosperms and identify which one is incorrect.

### Step-by-Step Solution:

1. **Statement 1**: "The leaves in gymnosperms are well adapted to withstand extremities of temperature, humidity, and wind."
- **Analysis**: This statement is correct. Gymnosperms have leaves that are adapted to harsh conditions. They typically have thick cuticles and stomata that are often sunken, which helps in reducing water loss and allows them to survive in extreme environments.

2. **Statement 2**: "Enzygous male cone and megasporophylls are born on the same tree but in Pinus male cones and female cones are born on different trees."
- **Analysis**: This statement is incorrect. In Pinus, both male cones (microstrobili) and female cones (megasporophylls) are found on the same tree. However, some other gymnosperms are dioecious, meaning male and female structures are on different trees, but this is not true for Pinus.

3. **Statement 3**: "Pollination in gymnosperms is carried by air."
- **Analysis**: This statement is correct. Gymnosperms primarily rely on wind for pollination, a process known as anemophily.

4. **Statement 4**: "In gymnosperms, male and female gametophytes do not have independent free-living existence."
- **Analysis**: This statement is also correct. In gymnosperms, the male and female gametophytes are dependent on the sporophyte for nutrition and do not exist independently.

### Conclusion:
The incorrect statement is **Statement 2**.

### Final Answer:
**Statement 2** is the incorrect statement.

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