Variation observed during tissue culture of some plants are known as

Options

A. Clonal variations
B. Somaclonal variations
C. Somatic variations
D. Tissue culture variations.

Answer

To answer the question regarding the variations observed during tissue culture of some plants, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Tissue Culture**: Tissue culture is a technique used to grow plant cells, tissues, or organs in a controlled environment, usually on a nutrient medium. This method allows for the propagation of plants under sterile conditions.

2. **Identifying Variations**: During the process of tissue culture, plants can exhibit variations. These variations can arise due to several factors, including genetic changes, environmental influences, and the conditions under which the tissue culture is performed.

3. **Types of Variations**: The variations observed in tissue culture can be classified into different categories. The options provided in the question are:
- a. Clonal variations
- b. Somaclonal variations
- c. Somatic variations
- d. Tissue culture variations

4. **Defining Somaclonal Variations**: Somaclonal variations specifically refer to the genetic variations that occur in plants regenerated from tissue culture. These variations can result from chromosomal rearrangements, such as changes in chromosome number (polyploidy) or structural changes (deletions, duplications).

5. **Selecting the Correct Answer**: Based on the definition and understanding of the variations that occur during tissue culture, the correct answer to the question is:
- **b. Somaclonal variations**

### Final Answer:
The variations observed during tissue culture of some plants are known as **Somaclonal variations** (Option B).

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