Total number of individual of a species in an area is called -

Options

A. Population size
B. Population density
C. Demography
D. Population dynamics

Answer

To solve the question "Total number of individuals of a species in an area is called -", we can follow these steps:

### Step 1: Understand the Terms
We need to clarify the definitions of the terms provided in the question:
- **Population Size**: This refers to the total number of individuals of a particular species in a specific area.
- **Population Density**: This is the number of individuals per unit area.
- **Demography**: This involves the study of changes in population numbers, including birth rates and death rates.
- **Population Dynamics**: This refers to the changes in population size and structure over time.

### Step 2: Identify the Correct Term
From the definitions:
- The question specifically asks for the total number of individuals of a species in an area.
- **Population Size** fits this definition perfectly, as it directly refers to the total count of individuals of a species in a defined area.

### Step 3: Eliminate Incorrect Options
- **Population Density** is not correct because it measures individuals per unit area, not the total count.
- **Demography** is also incorrect as it focuses on the changes in population numbers rather than the total count at a given time.
- **Population Dynamics** deals with the changes in population over time, which is not what the question is asking.

### Conclusion
The correct answer to the question is **Population Size**.

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