Ecology Review

Ecology Review

Assessment

Flashcard

Biology

9th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is nitrogen fixation?

Back

The process by which bacteria convert nitrogen gas (N2) from the atmosphere into ammonia (NH3), making nitrogen available to plants.

2.

FLASHCARD QUESTION

Front

What is denitrification?

Back

The process in the nitrogen cycle where nitrates (NO3-) are converted back into nitrogen gas (N2) and released into the atmosphere.

3.

FLASHCARD QUESTION

Front

What are tertiary consumers?

Back

Organisms that are carnivores and occupy the top level of the food web, feeding on secondary consumers.

4.

FLASHCARD QUESTION

Front

What is commensalism?

Back

A type of symbiotic relationship where one organism benefits while the other is neither helped nor harmed.

5.

FLASHCARD QUESTION

Front

What are pioneer species?

Back

The first organisms to colonize previously disrupted or damaged ecosystems, initiating ecological succession.

6.

FLASHCARD QUESTION

Front

What is the role of producers in an ecosystem?

Back

Organisms, such as plants, that produce their own food through photosynthesis and form the base of the food web.

7.

FLASHCARD QUESTION

Front

What is the difference between primary and secondary succession?

Back

Primary succession occurs in lifeless areas where soil has not yet formed, while secondary succession occurs in areas where a disturbance has destroyed an existing ecosystem but soil remains.

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