Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892



Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

The range of resources that a population can possibly use is called:

a. its fundamental niche.

b. its realized niche.

c. character displacement.

d. resource partitioning.

e. its relative abundance.

Summary Introduction


Any animal species living in a particular environment, interacts with both, biotic and abiotic factors existing in that environment. A niche is an area in the ecosystem, in which an organism inhabits. Every organism has a role to play in the ecosystem and use up the resources that are available. The availability of resources also has an important role in niches.


Justification/explanation for the correct answer:

Option (a) is given as its fundamental niche. In a fundamental niche, the resources are available easily and are not under any limitation. The population can freely use these resources and interact with the environment. The growth of the population is best in terms of both, quality and quantity. Hence, option (a) is correct.

Explanation for the incorrect answers:

Option (b) is given as its realized niche. In this, the resources are limited. A population’s growth is limited as the resources are used by more of the population. So, it is an incorrect option.

Option (c) is given as character displacement. This occurs when the populations of two similar species co-exist. One species is either eliminated or is adaptive to the changes in the environment...

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