The term 'totipotency' refers to the capacity of a

Options

A. cell to generate whole plant
B. but to generate whole plant
C. Seed to germinate
D. Cell to enlarge in size

Explanation

### Step-by-Step Solution:

1. **Definition of Totipotency**:
- Totipotency is defined as the ability of a single cell to divide and produce all the differentiated cells in an organism, including both the somatic cells and the gametes.

2. **Context of Totipotency**:
- This term is primarily used in the context of plant cells, where any part of the plant (known as an explant) can be cultured in vitro (in a controlled environment outside the organism) to regenerate a whole new plant.

3. **Process of Tissue Culture**:
- In tissue culture, a specific cell or explant is taken from a plant and placed in a nutrient-rich medium. This environment provides the necessary nutrients and hormones for the cell to grow and divide.

4. **Regeneration of an Individual**:
- The totipotent cell or explant can undergo multiple rounds of cell division and differentiation, ultimately leading to the formation of a complete individual that has the same genetic makeup as the original organism.

5. **Significance of Totipotency**:
- Totipotency is significant in biotechnology and agriculture, as it allows for the cloning of plants, the production of genetically modified organisms, and the conservation of endangered species.