Vivparous type of speed germination is found in

Options

A. Sonneratia
B. Rhizophora
C. Oryza sativa
D. Both 1 & 2

Answer

**Step-by-Step Solution:**

1. **Understanding Viviparous Germination**:
- Viviparous germination is a type of seed germination where the seeds begin to germinate while still attached to the parent plant. This means that the seed does not fall off and start growing independently; instead, it grows on the parent until it is ready to detach.

2. **Identifying Examples of Viviparous Germination**:
- This type of germination is commonly found in certain plants, particularly mangroves. Mangroves are a group of trees and shrubs that grow in coastal intertidal zones.

3. **Analyzing the Options**:
- The options provided are:
1. Sonneratia
2. Rhizophora
3. Oryza sativa (rice)
4. Both 1 and 2
- We need to determine which of these plants exhibit viviparous germination.

4. **Researching Each Option**:
- **Sonneratia**: This is a genus of mangrove trees known for their viviparous seed germination.
- **Rhizophora**: This is another genus of mangrove trees that also exhibits viviparous germination.
- **Oryza sativa**: This is the scientific name for rice, which does not exhibit viviparous germination; it has a different germination process.

5. **Conclusion**:
- Since both Sonneratia and Rhizophora are mangroves that exhibit viviparous germination, the correct answer is option 4: both 1 and 2.

**Final Answer**: The viviparous type of seed germination is found in both Sonneratia and Rhizophora (Option 4).

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