What is common in Bryophyllum, Scilla and Begonia?

Options

A. All are members of family Liliacease
B. All reproduce only sexually
C. All reprodce through leaves vegetatively
D. All lack heterospory

Answer

### Step-by-Step Solution:

1. **Identify the Plants**: The question asks about Bryophyllum, Scilla, and Begonia. We need to find out what they have in common.

2. **Examine the Options**: We are provided with multiple options regarding the characteristics of these plants. The options include:
- A) They are members of the family Liliaceae.
- B) They reproduce only sexually.
- C) They reproduce through leaves vegetatively.
- D) They all lack heterospory.

3. **Analyze Option A**: Check if Bryophyllum, Scilla, and Begonia belong to the family Liliaceae.
- **Conclusion**: This is incorrect. Bryophyllum belongs to the family Crassulaceae, while Scilla belongs to the family Asparagaceae, and Begonia belongs to the family Begoniaceae.

4. **Analyze Option B**: Determine if these plants reproduce only sexually.
- **Conclusion**: This is also incorrect. All three plants can reproduce vegetatively, in addition to sexual reproduction.

5. **Analyze Option C**: Investigate if they reproduce through leaves vegetatively.
- **Conclusion**: This is correct. Bryophyllum, Scilla, and Begonia can reproduce vegetatively through their leaves. Bryophyllum is particularly known for this method, as it can produce new plants from leaf cuttings.

6. **Analyze Option D**: Check if they all lack heterospory.
- **Conclusion**: This is incorrect. Heterospory refers to the production of two different types of spores, and while these plants may not exhibit heterospory, this is not a common characteristic that defines them.

7. **Final Conclusion**: The common characteristic among Bryophyllum, Scilla, and Begonia is that they all reproduce through leaves vegetatively.

### Answer:
**They all reproduce through leaves vegetatively.**

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