Which sequence gives the correct ordering of levels from smallest to largest?
A) Population, organism, ecosystem, community
B) Organism, population, community, ecosystem
C) Community, ecosystem, organism, population
D) Ecosystem, community, population, organism
E) Organism, community, population, ecosystem

Question

Quizplus · Accepted Answer

The smallest level is the organism, which is an individual living thing. The next level is the population, which is a group of organisms of the same species living in the same area. Then comes the community, which is all the populations of different species living and interacting in the same area. Finally, the largest level is the ecosystem, which includes all the living things and their physical environment in a particular area. Therefore, the correct order is organism, population, community, ecosystem.

Which Sequence Gives the Correct Ordering of Levels from Smallest