EBK BIOLOGY
EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Chapter 56, Problem 1U

Studies that demonstrate that species living in an ecological community change independently of one another in space and time

a. indicate that the species arrived in the community at different times.

b. indicate that the species’ realized niches are regulated by different aspects of the environment.

c. suggest species interactions are the sole determinant of which species coexist in a community.

d. None of the choices is correct.

Expert Solution & Answer
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Summary Introduction

Introduction:

An ecological community is defined as the naturally occurring group of native plants, animals and other organisms in a biological system. All the organisms are interacting with each other in a unique habitat. Their structure, composition and distribution are determined by changes in environmental conditions such climacteric conditions, altitude, and climate and water availability.

Answer to Problem 1U

Correct answer:

The species living in an ecological community changes independently of one another in space and time shows that the species realized niches that are regulated by different aspects of the environment. Therefore, option b. is correct.

Explanation of Solution

Reason for the correct statement

A niche is defined as the fitness of species that can survive under specific environmental condition. It describes that how organisms in a population use natural resources for their survival. Realized niche is the actual set of environmental condition which involves the presence and absence of other species, so that species can establish a stable population.

Option b. is given as “indicate that the species’ realized niches are regulated by different aspects of the environment”.

As, “the realized niche of a species are smaller in size because of interspecific interactions”, is the right answer.

Hence, option b. is correct.

Reasons for the incorrect statements:

Option a. is given as “indicate that the species arrived in the community at different times”.

During evolutionary changes different species are evolved due environmental conditions that tend to adapt that environment. So, it is a wrong answer.

Option c. is given as “suggest species interactions are the sole determinants of which species coexist in a community”.

Species are evolved by the changes in environmental factors and they adapt that change to survive and produce their offspring. So, it is a wrong answer.

Option d. is given as “None of the choices are correct”.

Species in a community are evolved with time and space. For their survival they also use natural resources. So, it is a wrong answer.

Hence, options a., c. and d. are incorrect.

Conclusion

An ecological community is composed of different types of population that are interacting with one another. There are four levels that are involved in ecology such as organism, population, ecosystem and community.

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Students have asked these similar questions
Which of the following defines the role of a species in a community,including its habitat and interaction with other species?a. ecological niche                          d. mimicryb. competitive exclusion                 e. None of these are correct.c. competition level
The average niche breadth for space resources is wide for species of barnacles in an intertidal community. This pattern would indicate… a. niche overlap is low b. a greater level of competition between species c. coexistence via resource partitioning d. a greater number of species in the community e. high levels of disturbance
Which of the following statements is correct regarding the competitive exclusion concept? a. multiple species can’t share the exact same niche within a community b. the realized niche of a species is different from its fundamental niche. c. competition within a population results in the success of the best-adapted individuals. d. two species cannot coexist within the same habitat.
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Ecology: Interspecific and Intraspecific Interactions | Ecology & Environment | Biology | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=IiQTrA0-TE8;License: Standard YouTube License, CC-BY