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Ecosystem Concepts and Energy Flow

Ecosystem Concepts and Energy Flow

Assessment

Interactive Video

Science

8th Grade

Practice Problem

Medium

Created by

Wayground Resource Sheets

Used 1+ times

FREE Resource

8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an ecosystem?

A geographic area where living organisms and their physical environment interact.

A type of building with a strong foundation.

A collection of plants that provide food and fuel.

A temporary pool of water that appears in spring.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary role of an autotroph in an ecosystem?

To consume other organisms for energy.

To break down dead organisms and return nutrients to the soil.

To harness energy from sources like sunlight and convert it into usable fuel.

To provide stability and support for other parts of the ecosystem.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do heterotrophs obtain energy in an ecosystem?

By consuming other organisms.

By converting sunlight into sugars through photosynthesis.

By using chemicals like hydrogen sulfide as an energy supply.

By breaking down dead organic matter.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main difference between a food chain and a food web?

A food chain shows who eats whom in a simple line, while a food web shows many interconnected feeding relationships.

A food chain only includes plants, while a food web includes animals.

A food chain is found in aquatic ecosystems, while a food web is found in terrestrial ecosystems.

A food chain describes how energy enters an ecosystem, while a food web describes how nutrients are recycled.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does energy move through an ecosystem?

In a circular path

In one direction, from the sun to consumers

Back and forth between producers and consumers

Only from decomposers to producers

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main role of a producer in an ecosystem?

To break down dead organisms

To consume other organisms for energy

To create its own food using energy from the sun

To regulate the population of consumers

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary reason scientists are collecting wild tomato seeds from the Atacama Desert?

To develop new types of tomato sauces

To preserve genetic diversity and breed drought-resistant plants

To introduce new tomato species to other deserts

To study how tomatoes grow in dry climates

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