Species is:

Options

A. population of one type
B. a group of interbreeding population
C. a group of individuals inhabiting a geographical area
D. populations of individual having same genotypes and phenotypes

Answer

### Step-by-Step Solution:

1. **Understanding the Concept of Species**:
- A species is defined as a group of living organisms that can interbreed and produce fertile offspring. This definition emphasizes the ability of individuals within a species to exchange genetic material through reproduction.

2. **Analyzing the Options**:
- Option 1: A population of one type - This does not encompass the idea of interbreeding among different individuals.
- Option 2: A group of interbreeding populations - This option aligns with the definition of species, as it includes the concept of interbreeding.
- Option 3: A group of individuals inhabiting a geographical area - While this describes a population, it does not specify the interbreeding aspect.
- Option 4: A population of individuals having the same genotypes and phenotypes - This option focuses on genetic similarity but does not address the interbreeding characteristic.

3. **Identifying the Correct Answer**:
- The correct answer is option 2: "A group of interbreeding populations." This option captures the essence of what constitutes a species, as it involves the ability of individuals to mate and produce offspring, thereby allowing for genetic exchange.

4. **Conclusion**:
- Therefore, the definition of a species in this context is best represented by option 2, which highlights the importance of interbreeding within populations.