Topic 6 Lesson 1

A relationship between two organisms where one benefits while the other is harmed is known as what?

• Decomposition

• Consummerism

• Mutualism

• Parasitism

This is known as a relationship in which both organisms involved benefit. 

• Predator-Prey

• Commensalism

• Mutualism

• Decomposition

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Clownfish live among the stinging tentacles of the sea anemone but never get stung. The sea anemone protects the clownfish from predators. The clownfish helps bring food to the carnivorous sea anemone. This is an example of a type of symbiotic relationship known as

• commensalism

• mutualism

• predation

• parasitism

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Lions typical fight to death for territory, mates, and food sources. Lions are most likely fighting due to:

• Commensalism

• Mutualism

• Competition

• Parasitism

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When predator numbers decrease, prey numbers ____________ because fewer of them are being consumed.

• decrease

• increase

• stay the same

• divide in half

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A relationship that describe a close interaction between two different species is known as what?

• Biodiversity

• Symbiosis

• Predation

• Emigration

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What is this picture describing?

• It is describing natural selection.

• It is describing direct competition between flamingos and ducks.

• It is describing abiotic factors of the tundra.

• It is describing the niche of each bird.

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A pond only has enough living space to support 16 fish. Living space is a ___________ factor.

• community

• ecosystem

• limiting

• negative

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Carrying capacity is the largest number of individuals of one species that an ecosystem can support over time.

• True

• False

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What is the effect of the growth of a population in an ecosystem?

• fewer resources for each individual in the population

• a greater amount of resources in the ecosystem

• a decrease in the amount of resources needed by each individual

• an increase in the size of the ecosystem

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