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Decomposers and recycling nutrients

5th grade (Year 6 in England) · 16 questions · Common Core: NGSS.5-LS2-1, NGSS.MS-LS2-3 · England: KS3 Biology: Interactions and interdependencies

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Date

Score/ 16

1
Question 1
Decomposers: which statement is NOT true?
- A. Decomposers work fastest when frozen.
- B. Decomposition is faster when it is warm and moist.
- C. Fungi and bacteria are decomposers.
- D. Decomposers return nutrients to the soil.
2
Question 2
What do decomposers do?
- A. break down dead plants and animals
- B. hunt living animals
- C. make food from sunlight
- D. pollinate flowers
3
Question 3
Is a rabbit a producer, a consumer or a decomposer?
- A. producer
- B. consumer
- C. decomposer
4
Question 4
Decomposers: which statement is NOT true?
- A. Decomposers work fastest when frozen.
- B. Decomposers return nutrients to the soil.
- C. Matter is recycled in an ecosystem.
- D. Fungi and bacteria are decomposers.
5
Question 5
Compost heaps rot faster when they are…
- A. sealed in plastic with no air
- B. frozen
- C. warm, moist and have air
- D. completely dry
6
Question 6
Is a shark a producer, a consumer or a decomposer?
- A. producer
- B. consumer
- C. decomposer
7
Question 7
Decomposers: which statement is NOT true?
- A. Fungi and bacteria are decomposers.
- B. Decomposers work fastest when frozen.
- C. Matter is recycled in an ecosystem.
- D. Decomposition is faster when it is warm and moist.
8
Question 8
Why are decomposers important for plants?
- A. They release nutrients (minerals) back into the soil
- B. They eat plant pests only
- C. They make plants grow faster in the dark
- D. They give plants sunlight
9
Question 9
Is a soil bacteria a producer, a consumer or a decomposer?
- A. producer
- B. consumer
- C. decomposer
10
Question 10
Decomposers: which statement is NOT true?
- A. Decomposers work fastest when frozen.
- B. Fungi and bacteria are decomposers.
- C. Decomposition is faster when it is warm and moist.
- D. Decomposers return nutrients to the soil.
11
Question 11
What do decomposers do?
- A. hunt living animals
- B. pollinate flowers
- C. break down dead plants and animals
- D. make food from sunlight
12
Question 12
Is a grass a producer, a consumer or a decomposer?
- A. producer
- B. consumer
- C. decomposer
13
Question 13
Decomposers: which statement is NOT true?
- A. Dead leaves just disappear on their own.
- B. Fungi and bacteria are decomposers.
- C. Matter is recycled in an ecosystem.
- D. Decomposers return nutrients to the soil.
14
Question 14
Which of these is a decomposer?
- A. rabbit
- B. mushroom (fungus)
- C. hawk
- D. oak tree
15
Question 15
Is a rabbit a producer, a consumer or a decomposer?
- A. producer
- B. consumer
- C. decomposer
16
Question 16
Decomposers: which statement is NOT true?
- A. Decomposers return nutrients to the soil.
- B. Dead leaves just disappear on their own.
- C. Decomposition is faster when it is warm and moist.
- D. Fungi and bacteria are decomposers.

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