Species is a group of organisms that

Options

A. Can interbreed
B. Cannot interbreed
C. Live together
D. None of the above

Answer

### Step-by-Step Text Solution:

1. **Understanding the Concept of Species**:
- A species is defined as the smallest taxonomic rank in biological classification. It represents a group of organisms that share common characteristics.

2. **Morphological Similarity**:
- Members of a species are typically morphologically similar, meaning they have similar physical traits and characteristics.

3. **Reproductive Capability**:
- A key feature of a species is that its members can interbreed. This means that organisms of the same species can mate and produce offspring.

4. **Opposite Sex Requirement**:
- For interbreeding to occur, there must be members of opposite sexes (male and female) within the species. This is crucial for reproduction.

5. **Fertile Offspring**:
- The offspring produced from this interbreeding must be fertile, meaning they can also reproduce and continue the species.

6. **Evaluating the Options**:
- The first option states that a species is a group of organisms that can interbreed, which aligns with the definition of a species. Therefore, this is the correct answer.
- The second option suggests that a species cannot interbreed, which contradicts the definition and is incorrect.
- The third option states that a species is a group of organisms that live together, which is not a defining characteristic of a species, making it incorrect.
- The fourth option, "none of the above," is also incorrect since the first option is valid.

7. **Conclusion**:
- The correct answer is that a species is a group of organisms that can interbreed and produce fertile offspring.