Population density of terrestrial organism is measured in terms of per

Options

A. m
B. `m^2`
C. `m^3`
D. `m^4`

Answer

To solve the question regarding the measurement of population density of terrestrial organisms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Population Density**:
- Population density refers to the number of individuals of a species per unit area. It helps in understanding how crowded a particular species is in a specific habitat.

2. **Identify the Type of Organisms**:
- The question specifies "terrestrial organisms," which are organisms that live on land.

3. **Determine the Measurement Unit**:
- Population density is typically expressed in terms of the number of individuals per unit area. Common units for this measurement include per square meter (m²), square kilometer (km²), or square mile.

4. **Evaluate the Options Provided**:
- Option 1: meter (m) - This is a linear measurement and not suitable for area.
- Option 2: meter square (m²) - This is an area measurement and is appropriate for population density.
- Option 3: meter cube (m³) - This is a volume measurement and not relevant for population density.
- Option 4: meter raised to the power of 4 (m⁴) - This is also not a standard measurement for area.

5. **Select the Correct Answer**:
- Based on the analysis, the correct measurement for the population density of terrestrial organisms is "per meter square" (m²).

### Final Answer:
The population density of terrestrial organisms is measured in terms of per **meter square (m²)**.

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