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 need to analyze each of the provided statements regarding gymnosperms and their reproductive structures.

### Step-by-Step Solution:

1. **Evaluate Statement 1**:
- "The leaves in gymnosperms are well adapted to withstand extremes of temperature, humidity, and wind."
- **Analysis**: This statement is correct. Gymnosperms have leaves that are often needle-like or scale-like, which helps them to conserve water and withstand harsh environmental conditions.

2. **Evaluate Statement 2**:
- "In Cycus, male cone and megasporophyll 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 (a type of gymnosperm), both male and female cones are found on the same tree, making it monoecious. In contrast, Cycus is dioecious, meaning male and female reproductive structures are found on different trees.

3. **Evaluate Statement 3**:
- "Pollination in general terms is carried by air."
- **Analysis**: This statement is correct. Many gymnosperms rely on wind for pollination, which is referred to as anemophily.

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

### Conclusion:
After evaluating all the statements, the incorrect statement is **Option 2**.