Polyploid derived from two different species is called :

Options

A. autopolyploid
B. triploid
C. allopolyploid
D. monoploid

Answer

**Step-by-Step Solution:**

1. **Understanding Polyploidy**:
- Polyploidy refers to a condition in which an organism has more than two complete sets of chromosomes. It can occur in plants and some animal species.

2. **Types of Polyploidy**:
- There are two main types of polyploidy:
- **Autopolyploidy**: This occurs when an organism has multiple sets of chromosomes that are all from the same species. For example, if a diploid organism (2n) undergoes polyploidy, it may become tetraploid (4n) with chromosomes like A, A, A, A.
- **Allopolyploidy**: This occurs when an organism has multiple sets of chromosomes derived from different species. This involves the combination of genetically distinct chromosomes from two different species.

3. **Identifying the Correct Term**:
- The question specifically asks for the term used to describe polyploidy that arises from two different species.
- Since autopolyploidy involves chromosomes from the same species, it cannot be the answer.
- Triploidy (having three sets of chromosomes) is also not the correct answer as it does not specify the origin from different species.
- Allopolyploidy fits the definition as it is formed from the combination of chromosomes from two different species.

4. **Conclusion**:
- Therefore, the correct answer to the question is **Allopolyploid**.

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