Question

which example describes the age structure of a population?

a species is found only in desert regions.
a population grows by 20 individuals each month.
a turtle population contains mostly young organisms.

Explanation:

🆕 New Concept Discovered: Population Age Structure
How a population is divided by age groups.

Step 1: Define age structure

The age structure of a population describes the proportion of individuals in different age groups (such as pre-reproductive/young, reproductive/adult, and post-reproductive/old). It helps ecologists understand whether a population is growing, stable, or declining.

Step 2: Evaluate the options

• Option 1: "A species is found only in desert regions."

This describes the geographic distribution or habitat of a species, not its age composition.

• Option 2: "A population grows by 20 individuals each month."

This describes the population growth rate, not the distribution of ages within the population.

• Option 3: "A turtle population contains mostly young organisms."

This directly describes the proportion of individuals belonging to a specific age category ("young") within the population.

Answer:

A turtle population contains mostly young organisms.