Density of a population (D) is -

Options

A. `D=(D(size))/(W(wt.))`
B. `D=(S(space))/(N(number))`
C. `D=(N(number))/(S(space))`
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Density**: Density refers to the quantity of individuals in a given area. It is a measure of how many organisms are present in a specific space.

2. **Defining Population Density**: Population density can be defined as the number of individuals (N) of a species in a specific area (A). This can be expressed mathematically as:
\[ D = \frac{N}{A} \]
where:
- \(D\) = density of the population
- \(N\) = number of individuals
- \(A\) = area in which the individuals are counted

3. **Units of Measurement**: The units for population density are typically expressed as individuals per unit area, such as individuals per square meter (individuals/m²).

4. **Application of the Concept**: For example, if there are 100 trees in a forest area of 200 square meters, the population density of trees would be calculated as:
\[ D = \frac{100 \text{ trees}}{200 \text{ m}^2} = 0.5 \text{ trees/m}^2 \]

5. **Conclusion**: Therefore, the density of a population is a crucial metric in ecology that helps in understanding the distribution and abundance of species within a specific habitat.