Consider the following statements with respect to the flowering plants and choose the correct option (a) Pollen grains represent the male gametes (b) Functional megaspore develops innto embryo sac that represents the female gamete (c) Transfer of pollen grains from anther to stigma of different plant is known as xenogamy (d) Transfer of pollen grains from anther to stigma of another flower of the same plant is known as geitonogamy

Options

A. a and b
B. a and c
C. a and d
D. c and d.

Answer

To solve the question regarding the statements about flowering plants, we will analyze each statement one by one to determine their correctness.

### Step-by-Step Solution:

1. **Statement A: Pollen grains represent the male gametes.**
- Pollen grains are produced from microspore mother cells through a process called microsporogenesis. They are the male gametophyte and contain the male gametes (nuclei) within them. Therefore, the statement is incorrect because pollen grains themselves do not represent the male gametes; they represent the male gametophyte.

2. **Statement B: Functional megaspore develops into embryo sac that represents the female gamete.**
- The functional megaspore is formed from megaspore mother cells. Out of four megaspores produced, only one is functional and develops into the embryo sac. The embryo sac contains the female gametes (egg cells). Thus, this statement is also incorrect because the embryo sac represents the female gametophyte, not the female gamete itself.

3. **Statement C: Transfer of pollen grains from anther to stigma of different plant is known as xenogamy.**
- Xenogamy refers to the transfer of pollen from the anther of one plant to the stigma of another plant. This statement is correct.

4. **Statement D: Transfer of pollen grains from anther to stigma of another flower of the same plant is known as geitonogamy.**
- Geitonogamy is the transfer of pollen from the anther of one flower to the stigma of another flower on the same plant. This statement is also correct.

### Conclusion:
- From the analysis, we find that:
- Statement A is incorrect.
- Statement B is incorrect.
- Statement C is correct.
- Statement D is correct.

Thus, the correct option includes statements C and D.

### Final Answer:
The correct statements are C and D.

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