The technique of obtaining large number plantlets by tissue culture method is called

Options

A. Plantiet culture
B. organ culture
C. micropropagation
D. macropropagation

Answer

To solve the question about the technique of obtaining a large number of plantlets by tissue culture, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question is asking for the specific technique used to produce a large number of plantlets through tissue culture methods.

2. **Review the Options**: The options provided include:
- A) Plantiate culture
- B) Organ culture
- C) Micro-propagation
- D) Macropropagation

3. **Evaluate Each Option**:
- **Option A: Plantiate culture** - This term does not exist in the context of plant tissue culture. Therefore, it is incorrect.
- **Option B: Organ culture** - While organ culture involves growing specific organs or tissues, it does not specifically refer to the mass production of plantlets. Hence, this option is also incorrect.
- **Option C: Micro-propagation** - This is a well-known technique in tissue culture where small pieces of meristematic tissue (called explants) are used to generate a large number of plantlets. This process takes advantage of the totipotency of plant cells, allowing them to develop into new plants.
- **Option D: Macropropagation** - This term is not commonly used in the context of tissue culture and does not refer to the technique for producing large numbers of plantlets.

4. **Conclusion**: After evaluating all the options, the correct answer is **C) Micro-propagation**. This technique effectively allows for the generation of a large number of plantlets from small tissue samples.

### Final Answer:
The technique of obtaining a large number of plantlets by tissue culture method is called **Micro-propagation**.