Biology Practice Test: Basic Ecological Concepts (Ecosystem) – Questions with Answers and Explanations

A space containing a group of interactive organisms is called _____ (WASSCE 2012)

A. community
B. habitat
C. ecosystem
D. population

The area around the earth where life activities go on is referred to as _____ (WASSCE 2012)

A. biosphere.
B. lithosphere.
C. habitat.
D. ecosystem.

The most important factor(s) that influence(s) the ecological niche of an organism is/are the ______ (WASSCE 2018)

A. water, light and predator-prey relationship.
B. food and water availability.
C. physical environment.
D. competition for food and space.

The diagram below is an illustration of organisms in an air-tight aquarium.

The most important factor needed by the organisms is ______ (WASSCE 2018)

The difference between a community and population is ____ (WASSCE 2014)

A. a community is made up of organisms of the same species while a population is made up of organisms of different species
B. a community is made up of populations of living organisms while a population is made up of organisms of the same species
C. an ecological niche does not exist in the community but it does in a population
D. a community attracts competition but a population does not.