Question

question 7 (1 point) which of the following is true? a each population of organisms contains many different species. b every frog in an ecosystem belongs to the same population. c every ecological community is based on one population of organisms. d each population of frogs in an ecosystem is made up of members of one species.

Explanation:

• Option a: A population consists of individuals of the same species, so it can't contain many different species. Eliminate a.
• Option b: Frogs can belong to different species, so not every frog in an ecosystem is part of the same population. Eliminate b.
• Option c: An ecological community has multiple populations (of different species), not just one. Eliminate c.
• Option d: A population is defined as a group of individuals of the same species in a given area. So a population of frogs in an ecosystem should be members of one species. This is correct.

Answer:

d. Each population of frogs in an ecosystem is made up of members of one species