Autopolyploidy can be induced artificailly by

Options

A. chloroform
B. colchicine
C. chloroquine
D. colchine

Answer

**Step-by-Step Solution:**

1. **Understanding Autopolyploidy**:
- Autopolyploidy occurs when an individual organism has more than two sets of chromosomes that are derived from the same parental species. This condition is significant in plant breeding and genetics.

2. **Identifying the Induction Method**:
- To induce autopolyploidy artificially, specific agents known as antimitotic agents are used. These agents interfere with the normal process of cell division.

3. **Recognizing Antimitotic Agents**:
- Among the various antimitotic agents, colchicine is a well-known compound that can induce polyploidy by preventing the separation of chromosomes during cell division.

4. **Evaluating the Options**:
- The options provided are:
- A. Chloroquine
- B. Colchicine
- C. Chloroquine (repeated)
- D. Colchicine (repeated)
- Since colchicine is the recognized agent for inducing autopolyploidy, we can conclude that options B and D are correct.

5. **Final Answer**:
- Therefore, the correct answer to the question is **B. Colchicine**.

---