The Hierarchical Organization of Organisms, Populations, and Communities within an Ecosystem

What does a community in ecology consist of?

• Only animals of the same species

• Only plants of different species

• Populations of different species in an area

• A single population of a species

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What does the term "community" refer to in an ecological context?

• A group of interacting humans in a town

• All the populations of different species in an area

• A collection of plants found in a forest

• The climate and weather patterns of a region

What is a "Population" in the context of an ecosystem?

• A community of different organisms

• All the members of a single species in an area

• One member of one type of species

• All the ecosystems in a particular area

Which of the following best defines a "Community" in an ecosystem?

• A single species

• Non-living components only

• All the populations of different species in one area

• The physical environment only

​ ​ (a)   - Organisms that have similar features and can reproduce.

​ (b)   - A group of the same species that live in a certain area.

​ (c)   -  A combination of all the different populations that live and interact in the same environment

​ (d)   - All the living and non-living things that interact in one specific part of the environment.

• Species

• Population

• Community

• Ecosystem

a

b

c

d

e

Community

Organism

Population

Biosphere

Ecosystem

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What does the term "population" refer to in biology?

• A group of different species living in the same area

• A single organism living in its natural habitat

• A group of organisms of the same species living in the same area

• The study of ecosystems and their interactions

Which of the following best describes the hierarchical organization of an ecosystem?

• Organisms, Populations, Communities, Ecosystems

• Cells, Tissues, Organs, Organ Systems

• Species, Genus, Family, Order

• Atoms, Molecules, Cells, Tissues

In an ecosystem, what is the primary difference between a population and a community?

• A population includes only one species, while a community includes multiple species.

• A population includes multiple species, while a community includes only one species.

• A population is larger than a community.

• A population includes abiotic factors, while a community does not.

Which of the following is an example of a real-world application of understanding populations within an ecosystem?

• Predicting the impact of a new predator on an existing prey population.

• Calculating the gravitational force between two planets.

• Determining the chemical composition of a new element.

• Measuring the speed of light in a vacuum.

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