Communities And Ecosystems - Biology Today | Biology+

Course

Introductory Biology

Study Pack

Set 1: Invitation to Biology

Set 2: Molecules of Life

Set 3: Cell Structure

Set 4: Energy and Metabolism

Set 5: Photosynthesis

Set 6: Releasing Chemical Energy

Set 7: Dna Structure and Function

Set 8: Gene Expression and Control

Set 9: How Cells Reproduce

Set 10: Patterns of Inheritance

Set 11: Biotechnology

Set 12: Evidence of Evolution

Set 13: Processes of Evolution

Set 14: Prokaryotes, Protists, and Viruses

Set 15: Plants and Fungi

Set 16: Animal Evolution

Set 17: Population Ecology

Set 18: Communities and Ecosystems

Set 19: The Biosphere and Human Effects

Set 20: Animal Tissues and Organs

Set 21: How Animals Move

Set 22: Circulation and Respiration

Set 23: Immunity

Set 24: Digestion and Excretion

Set 25: Neural Control and the Senses

Set 26: Endocrine Control

Set 27: Animal Reproduction and Development

Set 28: Plant Form and Function

Set 29: Life Cycles of Flowering Plants

Set 18 Communities And Ecosystems

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Set 18 Communities And Ecosystems

(Multiple Choice)

Free

In a typical predator-prey relationship, ____.

A) the predator exerts selective pressure on its prey
B) the prey exerts selective pressure on its predator
C) the predator will not kill its prey
D) the predator feeds on carcasses
E) predator and prey exert selective pressures on each other

Answer

(Multiple Choice)

Free

An example of a one-way relationship in which one species benefits and another is directly hurt is ____.

A) commensalism
B) mutualism
C) interspecific competition
D) scramble competition
E) parasitism

Answer

(Multiple Choice)

Free

Which is a characteristic of parasites?

A) They are indiscriminate in their choice of host.
B) They inflict serious injury and kill their host.
C) Some reside inside their host, whereas others live outside their host.
D) Parasitic hosts are always animals.
E) They rarely harm their host.

Answer