AP Biology : Ecology

Study concepts, example questions & explanations for AP Biology

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Example Questions

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Example Question #141 : Ecology

During primary succession, when are pioneer species likely to be found in an environment?

Possible Answers:

When many nutrients are available

Near later stages of succession

Near early stages of succession

During the summer

Correct answer:

Near early stages of succession

Explanation:

Pioneer species are the first species to colonize an environment, and thus would be found in the early stages of succession.

Example Question #142 : Ecology

Which would not be a cause of secondary succession?

Possible Answers:

Deforestation due to logging

Windstorm

Flooding

Lava flow

Correct answer:

Lava flow

Explanation:

Primary succession occurs in an environment without previous life, or a barren habitat. Secondary succession occurs in an area that had previously been inhabited but experienced a disturbance, such as a lava flow. Secondary succession occurs in environments that have been distrubed, but have some remaining soil and vegetation.

Example Question #1 : Understand Differences Between Primary And Secondary Succession

The first species to inhabit an area after a disruption area called

Possible Answers:

secondary species

keystone species

pioneer species

primary species

Correct answer:

pioneer species

Explanation:

The first species to inhabit an area that has been disrupted are called pioneer species. This is true in both primary and secondary succession. These pioneer species are hardy species that can withstand harsh conditions.

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