Indicator Species: How Different Species Indicate Pollution in the Environment

Indicator Species: How Different Species Indicate Pollution in the Environment

Assessment

Interactive Video

Biology

University

Hard

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The video explains indicator species, organisms that signal pollution levels in air and water. It covers air pollution indicators like lichens and black spot fungus, and water pollution indicators like stoneflies and bloodworms. The reliability of these species compared to direct pollution measurements is discussed, highlighting their role in assessing ecosystem health.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary role of an indicator species in an ecosystem?

To provide food for other species

To indicate the presence or absence of pollution

To control the population of other species

To produce oxygen for the environment

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a common source of air pollution?

Combustion of fossil fuels

Natural disasters

Plant respiration

Photosynthesis

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of lichen can tolerate very low levels of air pollution?

Crusty lichens

Leafy lichens

Bushy lichens

All lichens

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the presence of black spot fungus on roses indicate?

Low levels of oxygen

High levels of carbon monoxide

Low levels of sulfur pollution

High levels of nitrogen pollution

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is eutrophication primarily caused by?

Low carbon dioxide levels

Excess nutrients in water

Lack of sunlight

High oxygen levels

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which aquatic invertebrate indicates clean water?

Bloodworms

Sludge worms

Stoneflies

Leeches

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do numerical data readings from sensors compare to indicator species?

They are more subjective

They provide immediate and detailed measurements

They are less accurate

They are slower to obtain