MCA Review (Page 14) Interdepence Among Living Systems

What are the two types of factors involved in an ecosystem?

• Chemical and Physical

• Biotic and Abiotic

• Internal and External

• Plants and Animal

Answer explanation

Biotic and Abiotic factors are the two types involved in an ecosystem, where biotic factors are living organisms and abiotic factors are non-living components.

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What is a community in ecological terms?

• A group of humans interacting in a society

• A single species population in a given area

• All of the populations of organisms in a given area

• A collection of plants in a forest

Answer explanation

In ecological terms, a community refers to all of the populations of organisms in a given area, every population of species interacting with each other.

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

• A group of many different species living in the same habitat

• All of the members of a single species in a given area

• The total number of people living in a specific area

• A collection of ecosystems sharing similar climates

Answer explanation

The term 'population' in ecology refers to all of the members of a single species in a given area.

What is a predator/prey relationship?

• One organism eats the other

• Two organisms live together for mutual benefit

• One organism benefits at the expense of the other without hunting

• Two organisms compete for the same resources

Answer explanation

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What is a characteristic of a parasite in a parasite/host relationship?

• The parasite provides benefits to the host.

• The parasite lives independently of the host.

• The parasite lives off the host, harming it and immediatly causing death.

• The parasite and host do not interact.

• The parasite lives off the host, harming it and possibly causing death.

What is a producer in an ecosystem?

• Organism that makes its own food

• Organism that consumes other organisms

• Organism that decomposes organic material

• Organism that lives in water

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What is a consumer in ecological terms?

• Organism that produces its own food

• Organism that decomposes other organisms

• Organism that eats another organism to survive

• Organism that lives in symbiosis with another

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What is a decomposer?

• Organism that consumes only plants

• Organism that preys on other animals

• Organism that synthesizes its own food through sunlight

• Organism that breaks down the remains of other dead organisms

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What is a food web?

• A system of interlocking and interdependent food chains.

• A collection of plants only.

• A single sequence of organisms eating each other.

• A graphical representation of water flow in an ecosystem.

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Which of the following best describes how a food web works?

• It shows the energy flow from one organism to another.

• It outlines the lifespan of each organism.

• It displays only predator-prey relationships.

• It represents non-living elements in an ecosystem.

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