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Benthic Macroinvertebrates and Ecosystems

Benthic Macroinvertebrates and Ecosystems

Assessment

Interactive Video

Biology, Science, Other

4th - 5th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

Emma, a watershed steward, explains the role of benthic macroinvertebrates in ecosystems. These creatures live on creek floors, are visible to the naked eye, and lack backbones. They consume detritus, contributing to the food chain by becoming prey for other animals. Emma highlights different habitats like riffles and pools, and how macroinvertebrates breathe and feed. She discusses their ecological importance and how they indicate water health. The video concludes by emphasizing their role in nutrient cycling and ecosystem support.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary responsibility of a watershed steward?

To remove all plants and animals from a watershed

To build new watersheds

To take care of a watershed that is not theirs

To own and manage a watershed

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does 'benthic' refer to in the term 'benthic macroinvertebrates'?

Living on land

Living in the air

Living in trees

Living under the water, specifically on the floor of a creek or stream

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a riffle in a creek?

A dry area next to the creek

A place where the creek is blocked by rocks

A fast-moving, shallow part of the creek

A deep, slow-moving part of the creek

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do mayflies breathe underwater?

Through their skin

Through their legs

Using gills that filter out dissolved oxygen

By coming to the surface for air

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do caddisflies use to protect their soft bodies?

Bubbles

Cases made out of rocks or other materials

Sand

Leaves

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary diet of caddisflies?

Fish

Microbes that decompose leaves

Leaves

Algae

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which animals are directly fed by benthic macroinvertebrates?

Birds, frogs, salamanders, and fish

Only fish

Only birds

Only mammals

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