Study the given statements about gymnosperrms and select the correct option.
(i). Mode of fertilisation is siphonogamy
(ii). Male and female cones are borne on same tree in pinus.
(iii). Endosperm represents female gametophyte.

Options

A. Statement I and II are true
B. Statement ii and iii are true.
C. statement i and iii are correct
D. statement (i), (ii) and (iii) are correct

Answer

To solve the question about gymnosperms, we need to evaluate each of the three statements provided and determine their validity.

### Step-by-Step Solution:

1. **Evaluate Statement (i)**:
- The statement claims that the mode of fertilization in gymnosperms is siphonogamy.
- **Explanation**: Siphonogamy is a type of fertilization where the pollen tube grows and delivers sperm cells to the ovule. This is indeed the mode of fertilization in gymnosperms.
- **Conclusion**: Statement (i) is **True**.

2. **Evaluate Statement (ii)**:
- The statement claims that male and female cones are borne on the same tree in Pinus.
- **Explanation**: Pinus, a genus of gymnosperms, is known to be monoecious, meaning it has both male and female reproductive structures on the same individual tree.
- **Conclusion**: Statement (ii) is **True**.

3. **Evaluate Statement (iii)**:
- The statement claims that endosperm represents the female gametophyte.
- **Explanation**: In gymnosperms, the endosperm is indeed derived from the female gametophyte and serves as a food reserve for the developing embryo.
- **Conclusion**: Statement (iii) is **True**.

4. **Final Evaluation of Options**:
- Now that we have established that all three statements are true, we can evaluate the options given:
- Option 1: Statement 1 and 2 are true. (Incorrect, as statement 3 is also true)
- Option 2: Statement 2 and 3 are true. (Incorrect, as statement 1 is also true)
- Option 3: Statement 1 and 3 are correct. (Incorrect, as statement 2 is also true)
- Option 4: Statement 1, 2, and 3 are correct. (Correct, as all statements are true)

### Conclusion:
The correct option is **Option 4**: All statements (i), (ii), and (iii) are true.