Tracy Rains
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Biology Quiz on Biotic Interactions Within an Ecosystem, created by Tracy Rains on 08/18/2017.

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Tracy Rains
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Biotic Interactions Within an Ecosystem

Biotic Interactions Within an Ecosystem

Question 1 of 10

1

Which of the following is most likely a decomposer?

Select one of the following:

  • grass

  • bacteria

  • water

  • bird

Explanation

Question 2 of 10

1

The term “primary consumer” is used to define an organism that

Select one of the following:

  • eats only plants for energy

  • eats only animals for energy

  • makes its own food for energy

  • doesn’t need any food for energy

Explanation

Question 3 of 10

1

Species that use the same source of nutrition within a food web can best be described as

Select one of the following:

  • providing double links in a food chain

  • being homeopathic for energy flow

  • occupying the same trophic level

  • being friends in the food web

Explanation

Question 4 of 10

1

Which of the following best explains why there are usually NOT more than five trophic levels in a food chain?

Select one of the following:

  • Most carnivores function at more than one trophic level

  • Trophic levels above this number contain too many individuals

  • Top carnivores are too few in number to hunt prey effectively

  • 90% Energy is lost from each trophic level below

Explanation

Question 5 of 10

1

Which of the following is an abiotic part of an ecosystem?

Select one of the following:

  • grass

  • bacteria

  • water

  • bird

Explanation

Question 6 of 10

1

Which of the following is true about secondary consumers in an ecosystem?

Select one of the following:

  • They eat only plants.

  • They are eaten by primary consumers.

  • They are smaller and weaker than are primary consumers.

  • They are fewer in number than are primary consumers.

Explanation

Question 7 of 10

1

A biotic relationship within an ecosystem in which both organism benefit is referred to as

Select one of the following:

  • Commensalism

  • Mutualism

  • Parasitism

  • Predator-prey

Explanation

Question 8 of 10

1

Cuckoo and Warbler- A cuckoo may lay its egg in a warbler's nest. The cuckoo's young will displace the warbler's young and the warbler will raise the cuckoo's young. This is an example of

Select one of the following:

  • Commensalism

  • Mutualism

  • Parasitism

  • Predator-prey

Explanation

Question 9 of 10

1

A stable food chain will have a multitude of feeding relationships between organisms.

Select one of the following:

  • True
  • False

Explanation

Question 10 of 10

1

A cow and grass will have a predatory relationship even though it may not kill the plant it is eating.

Select one of the following:

  • True
  • False

Explanation

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