Microproopagation is

Options

A. Raising of plants from a small tissue in culture
B. Multiplication of small plants
C. Propagation of small parts of organisms
D. Indefinite maintenance of an organ or tissue

Answer

**Step-by-Step Solution:**

1. **Understanding Micropropagation**: Micropropagation is a plant propagation technique that involves growing plants from small tissue samples in a controlled environment. This method is particularly useful for producing large numbers of genetically identical plants.

2. **Identifying the Options**: The question provides four options regarding the definition of micropropagation:
- A. Raising of plants from a small tissue and culture
- B. Multiplication of small plants
- C. Propagation of small parts of organisms
- D. Indefinite maintenance of an organ or a tissue

3. **Analyzing Each Option**:
- **Option A**: This option describes the process accurately as it involves using small tissue samples (explant) to grow new plants in culture.
- **Option B**: While micropropagation does involve multiplication, it specifically refers to the use of tissue culture, which is not mentioned in this option.
- **Option C**: This option is too broad and does not specifically refer to plants or the tissue culture method.
- **Option D**: This option refers to maintenance rather than propagation, which is not the primary focus of micropropagation.

4. **Conclusion**: Based on the analysis, the correct definition of micropropagation is clearly stated in option A: "raising of plants from a small tissue and culture."

5. **Final Answer**: Therefore, the answer to the question is **A. Raising of plants from a small tissue and culture**.

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