Zoodiogamy takes place in:-

Options

A. Lower Gymnosperms
B. Higher Gymnosperms
C. Angiosperms
D. All the above

Answer

### Step-by-Step Solution:

1. **Understanding Zoodiogamy**:
- Zoodiogamy is a type of reproduction in plants where male gametes (sperm) swim through water to reach female gametes (eggs). This process is similar to how certain animals reproduce, hence the prefix "zoo" which refers to animals.

2. **Analyzing the Options**:
- **Option 1: Lower Gymnosperms**:
- Lower gymnosperms, such as cycads and ginkgoes, utilize zoodiogamy for reproduction. The male gametes swim in water to fertilize the female gametes.
- **Option 2: Higher Gymnosperms**:
- Higher gymnosperms, like conifers, do not use zoodiogamy; they reproduce through a process called siphonogamy, where pollen tubes carry sperm to the ovule.
- **Option 3: Angiosperms**:
- Angiosperms (flowering plants) also do not utilize zoodiogamy; they rely on pollination mechanisms that do not involve swimming sperm.
- **Option 4: All the Above**:
- Since only lower gymnosperms exhibit zoodiogamy, this option is incorrect.

3. **Conclusion**:
- The correct answer is **Lower Gymnosperms** (Option 1), as they are the only group among the options that reproduce via zoodiogamy.

### Final Answer:
Zoodiogamy takes place in **Lower Gymnosperms**.

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