Choose odd one w.r.t. medium through which male gametes are transferred ?

Options

A. Algae, Bryophytes
B. Pteridophytes, Algae
C. Simple plant Bryophytes
D. Gymnosperms, Angiosperms

Answer

To solve the question "Choose the odd one w.r.t. medium through which male gametes are transferred," we will analyze the options provided regarding the medium of transfer for male gametes in different groups of plants.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks us to identify which option is different concerning the medium through which male gametes are transferred.

2. **Analyze the Options**:
- **Option A: Algae and Bryophytes**: Both algae and bryophytes are aquatic plants. Male gametes in both groups are transferred through water. Therefore, this option is not the odd one out.

- **Option B: Pteridophytes and Algae**: Pteridophytes (like ferns) and algae are also aquatic. In both cases, male gametes are transferred through water. Hence, this option is also not the odd one out.

- **Option C: Simple Plants (Bryophytes)**: Bryophytes, as mentioned earlier, require water for the transfer of male gametes. This option is again not the odd one out.

- **Option D: Gymnosperms and Angiosperms**: Gymnosperms (like conifers) and angiosperms (flowering plants) do not require water for the transfer of male gametes. Instead, they use pollen grains that can be transferred by wind or insects. This makes this option the odd one out.

3. **Conclusion**: The odd one out with respect to the medium through which male gametes are transferred is **Option D: Gymnosperms and Angiosperms**.

### Final Answer:
**Option D: Gymnosperms and Angiosperms**

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