Search Header Logo
  1. Resource Library
  2. Science
  3. Earth & Space Science
  4. Cycles Of Matter
  5. Cycles Of Matter In Ecosystems: Part 1 (nitrogen)
Cycles of Matter in Ecosystems: Part 1 (Nitrogen)

Cycles of Matter in Ecosystems: Part 1 (Nitrogen)

Assessment

Presentation

Science

6th - 8th Grade

Practice Problem

Medium

Created by

Derrick Thompson

Used 10+ times

FREE Resource

18 Slides • 7 Questions

1

media

2

media

3

media

4

media

5

Multiple Choice

Why is nitrogen essential for plant growth?

1

Because it is used by plants and animals to make proteins

2

Because it is used by plants and animals to make carbohydrates

3

Because it is used to make fats and minerals.

4

Because it is used to make vitamins

6

media

7

media

8

Multiple Choice

Which of the following is NOT a component of soil as shown in the diagram?

1

Plastic

2

Mineral

3

Air

4

Water

9

media

10

Multiple Select

Select all the correct statements about the conversion of nitrogen by bacteria.

1

Bacteria convert nitrogen gas from the air into ammonia or ammonium.

2

Bacteria convert ammonia and ammonium into nitrate.

3

Nitrogen fixation means converting nitrogen gas to ammonia and ammonium.

4

Plants can use ammonia and nitrate to make proteins.

11

media

12

media

13

media

14

media

15

Multiple Choice

Why are legumes considered self-sufficient (can take care of themselves) in getting nitrogen?

1

They have bacteria in their roots that convert nitrogen gas to nitrate.

2

They absorb nitrogen gas directly from the air through their leaves.

3

They do not require nitrogen for growth because they use minerals instead.

4

They produce their own ammonium compounds.

16

media

17

media

18

media

19

Multiple Choice

How do animals contribute to the nitrogen cycle?

1

By releasing nitrogen as waste products

2

By absorbing nitrogen directly from the air

3

By converting nitrates into nitrogen gas

4

By producing root nodules

20

media

21

Multiple Choice

Which organisms are the most responsible for breaking down dead organisms and returning nitrogen to the soil?

1

Fungi and bacteria

2

Plants and animals

3

Insects and birds

4

Fish and amphibians

22

media

23

media

24

Multiple Select

Which of the following are steps in the nitrogen cycle as shown in the diagram?

1

Nitrogen-fixing bacteria convert unusable nitrogen to usable forms

2

Animals eat plants

3

Plants release nitrogen gas into the atmosphere

4

Lightning changes nitrogen gas into nitrogen compounds

25

media
media

Show answer

Auto Play

Slide 1 / 25

SLIDE