Discuss the importance of biodiversity in aquatic ecosystems and provide two benefits it offers.

Biodiversity enhances ecosystem resilience and provides resources for humans.

Biodiversity decreases ecosystem stability.

Biodiversity provides no benefits to ecosystems.

Biodiversity only benefits terrestrial ecosystems.

Why is biodiversity important in aquatic ecosystems?

It provides resources like food and medicine

It decreases resilience to environmental changes

The major abiotic factors that influence aquatic ecosystems include

water temperature and amount of light

When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water?

Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.

The water becomes better able to support aerobic organisms.

The algae provide food for fishes and other organisms, leading to decreased algae populations.

The extra nitrogen provides additional food for the other organisms, increasing their population.

Salt water is an abundant resource but unusable for irrigation and drinking. As demands on freshwater sources increase, the use of desalination processes to remove salt from ocean water is increasing. A concern of desalinating water is the large amounts of recovered salts that are returned to the ocean. Which of the following describes the most likely impact of desalination on the surrounding ocean environment?

Alteration in ocean salt levels would cause loss of species and unbalanced populations in marine food webs.

Methane gas would pollute the ocean environment as shoreline organisms begin to die and decay.

Nonrenewable resources in the ocean environment would become depleted and upset the ecosystem's balance.

Increased levels of salts and minerals in the ocean would result in overpopulation of marine bivalves due to strengthened shells.

The major abiotic factors that influence aquatic ecosystems include

water temperature and amount of light

the ocean's dark lower layer where photosynthesis cannot occur

the sunlit upper layer of the ocean where photosynthesis occurs

on the bottom of lakes, streams, and oceans.

areas of land that are flooded at least part of the year

Freshwater Ecosystem Quiz

Quiz

•

Biology

•

12th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-LS2-4, MS-LS2-5, MS-LS2-3

+6

Standards-aligned

Scott Purdy

Used 1+ times

FREE Resource

21 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not a part of a freshwater ecosystem?

Lakes

Rivers

Oceans

Wetlands

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of ecosystem is known for having the greatest biodiversity?

Desert

Forest

Marine

Urban

Tags

NGSS.MS-LS2-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main factor that distinguishes marine ecosystems from freshwater ecosystems?

Temperature

Salinity

Depth

Light

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Estuaries are important because they:

Act as natural filters for pollutants

Provide habitat for various species

Serve as breeding grounds for fish

All of the above

Tags

NGSS.MS-LS2-5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary source of energy in most aquatic ecosystems?

Chemical reactions

Sunlight

Wind

Geothermal activity

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the role of wetlands in maintaining ecological balance in freshwater ecosystems.

Wetlands increase soil erosion.

Wetlands provide habitat for diverse species.

Wetlands decrease water quality.

Wetlands are not important for ecosystems.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain how human activities can impact marine ecosystems and give an example.

Human activities have no impact on marine ecosystems.

Human activities improve marine biodiversity.

Human activities can lead to pollution, such as oil spills.

Human activities only affect terrestrial ecosystems.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

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Freshwater Ecosystem Quiz

21 questions

Which of the following is not a part of a freshwater ecosystem?

Which type of ecosystem is known for having the greatest biodiversity?

What is the main factor that distinguishes marine ecosystems from freshwater ecosystems?

Estuaries are important because they:

What is the primary source of energy in most aquatic ecosystems?

Describe the role of wetlands in maintaining ecological balance in freshwater ecosystems.

Explain how human activities can impact marine ecosystems and give an example.

Discuss the importance of biodiversity in aquatic ecosystems and provide two benefits it offers.

Which of the following is a type of water body that acts as a natural water filter and controls flooding?

What is a significant impact of human activities like pollution and overfishing on marine ecosystems?

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