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

Hello and Welcome to Biology Practice Test: Basic Ecological Concepts (Ecosystem)

  1. You are to attempt 5 random objectives questions ONLY.
  2. Supply Your Full Name and Location in the text box below and begin immediately.
  3. You can attempt as many times as possible


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.


The salinity of a brackish habitat _____ (WASSCE 2019)

A. increases immediately after rainfall
B. increases at the end of the rainy season
C. decreases with an increase in the number of organisms
D. increases during the dry season


A community reaches a climax when _____ (WASSCE 2015)

A. only pioneer organisms are present.
B. new habitats are constantly being formed.
C. there is an introduction of new plants and animal species within the community.
D. the composition and size of a community remains constant over a long period.


Tall trees with branched trunks which grow above the upper storey of the forest are commonly referred to as ______ (WASSCE 2019)

A. emergent
B. herbs
C. lianes
D. shrubs


Study the diagram of the zones of a marine habitat below;

In which of the zones can very few organisms be found? (WASSCE 2012)

A. I   B. II   C. III   D. IV

 

 

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