Unit #1 Review B

Unit #1 Review B

Assessment

Flashcard

Biology

9th - 10th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a pioneer species?

Back

A species that colonizes an area where no other living organisms exist, initiating a cycle of ecological succession.

2.

FLASHCARD QUESTION

Front

What does succession refer to in ecology?

Back

The process of change in the species structure of an ecological community over time.

3.

FLASHCARD QUESTION

Front

Define autotroph.

Back

An organism that produces its own food using sunlight or chemical energy; also known as a producer.

4.

FLASHCARD QUESTION

Front

Which organisms in a food web contain the lowest concentration of chemical pollutants?

Back

Producers, as they are at the base of the food chain.

5.

FLASHCARD QUESTION

Front

In an energy pyramid, which organisms have the most energy available?

Back

Producers, as they convert sunlight into energy through photosynthesis.

6.

FLASHCARD QUESTION

Front

What is secondary succession?

Back

The process of ecological change that occurs in an area where a disturbance has destroyed an existing community but left the soil intact.

7.

FLASHCARD QUESTION

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic material, recycling nutrients back into the soil.

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