Which of the following is the basic unit of classification?

Options

A. Individual
B. Population
C. Species
D. Sub-species

Answer

To solve the question "Which of the following is the basic unit of classification?", we can follow these steps:

### Step 1: Understand the Concept of Classification
Classification in biology refers to the systematic arrangement of living organisms into groups based on shared characteristics. This helps in organizing the vast diversity of life.

**Hint:** Think about why we need to classify organisms and how it helps in studying them.

### Step 2: Identify the Basic Units of Classification
The hierarchy of biological classification includes several ranks such as domain, kingdom, phylum, class, order, family, genus, and species. Among these, the species is considered the most fundamental unit.

**Hint:** Recall the different levels of classification and focus on the one that is most specific.

### Step 3: Define Species
A species is defined as a group of organisms that are morphologically similar and can interbreed to produce fertile offspring. This definition emphasizes the reproductive aspect of species.

**Hint:** Consider what characteristics make organisms belong to the same species.

### Step 4: Example of a Species
An example of a species is the domestic cat, scientifically named Felis catus. Here, "catus" identifies the species of the cat, distinguishing it from other species.

**Hint:** Think of other examples of species and how they are named scientifically.

### Conclusion
Based on the understanding of classification and the definition of species, we conclude that the basic unit of classification is indeed the species.

**Final Answer:** The basic unit of classification is **species**.