practice: ecology study guide

What is meant by 'carrying capacity'?

• The maximum population size an environment can sustain

• The minimum population size an environment can sustain

• The average population size an environment can sustain

• The population size that exceeds the environment's resources.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Explain what happens immediately after the population rises above the blue line.

• The population stabilizes

• The population decreases

• The population continues to increase

• The population becomes extinct.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Taking into account the minor fluctuations in the population indicated by the purple line, can this population be said to be relatively stable? Why or why not?

• Yes, because the fluctuations are minor

• No, because the fluctuations are major

• Yes, because the population never exceeds carrying capacity

• No, because the population always exceeds carrying capacity

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Factors that limit populations can be density dependent OR independent of the population density. Which of the following is a density-dependent factor?

• Natural disasters

• Disease

• Climate

• Human activities

A modification of an organism or its parts that makes it more fit for existence under the conditions of its environment is the definition of...

• Adaptation

• mutation

• development

• manipulation

Tags

NGSS.MS-LS4-4

The roots of a plant reaching toward water is...

• gravitropism

• phototropism

• hydrotropism

• thigmotropism

A vine growing along and upon a structure is...

• gravitropism

• phototropism

• hydrotropism

• thigmotropism

Tags

NGSS.MS-LS1-5

Sunflowers that turn to face the light of the sun is...

• gravitropism

• phototropism

• hydrotropism

• thigmotropism

A plant the naturally grows upright rather than facing down is showing...

• gravitropism

• phototropism

• hydrotropism

• thigmotropism

What does it mean to say that a species is endangered?

• The species is thriving

• The species is at risk of extinction

• The species is overpopulated

• The species is stable.