Streams and Rivers

Question 1

Where is light penetration in a river or stream likely to be lowest?a.the sourceb.the mouth c.the middle portiond.none of the above

Revolt · Accepted Answer

B

Question 2

Which of the following is not a characteristic of the source of rivers and streams?a.high oxygen levelsb.freshwater fishc.cooler temperaturesd.murky waters

Revolt · Accepted Answer

D

Question 3

Which of the following does not contribute to water pollution?a.forestryb.industryc.agricultured.none of the above

Revolt · Accepted Answer

D

Question 4

Explain why the middle sections of rivers have the greatest biodiversity.

Revolt · Accepted Answer

The middle sections have the greatest biodiversity because they combine nutrient-rich water from upstream with adequate current, oxygen, sunlight, and diverse habitats such as pools, riffles, vegetation, and varied streambeds.

Question 5

Explain how the conversion of wetlands to farmland has impacted streams and rivers.

Revolt · Accepted Answer

Converting wetlands to farmland removes natural water filtration and storage. It increases runoff, erosion, sediment, nutrients, and agricultural pollutants entering streams and rivers, while also increasing flooding and destroying aquatic and riparian habitat.

Question 6

Riparian foliage _______.a.provides shade and shelter b.increases photosynthesis of aquatic plantsc.limits the organic matter present in rivers and streamsd.all of the above

Revolt · Accepted Answer

A

Question 7

How do streams conserve biodiversity?a.they connect habitatsb.they are confined by a bank and a bedc.they inhibit fish migrationd.all of the above

Revolt · Accepted Answer

A

Streams and Rivers Answers

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