Population density of terrestrial organism is measured in terms of per

Options

A. meter
B. `"meter"^2`
C. `"meter"^3`
D. `"meter"^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. **Understanding Population Density**:
- Population density refers to the number of individuals of a species per unit area. It helps in understanding how crowded a particular area is with organisms.

2. **Defining the Components**:
- The numerator represents the number of individuals (which is a count and thus unitless).
- The denominator represents the area over which these individuals are distributed.

3. **Identifying the Unit of Area**:
- In ecological studies, the area is typically measured in square meters (m²). This is the standard unit used for terrestrial organisms.

4. **Formulating the Expression**:
- The expression for population density can be written as:
\[ \text{Population Density} = \frac{\text{Number of Individuals}}{\text{Area (m²)}} \]

5. **Conclusion**:
- Since the number of individuals is unitless and the area is measured in square meters, the population density of terrestrial organisms is expressed in terms of individuals per square meter (ind/m²).

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

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