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Food webs and interdependence

6th grade (Year 7 in England) · 16 questions · Common Core: NGSS.MS-LS2-1, NGSS.MS-LS2-2, NGSS.MS-LS2-4 · England: KS3 Biology: Interactions and interdependencies, KS4 Combined Science: Ecosystems

Name

Date

Score/ 16

  1. Question 1

    Food webs: which statement is NOT true?

    • A. Predator and prey populations often rise and fall in cycles.
    • B. Removing one species can affect many others in a food web.
    • C. Animals often compete for food, water and space.
    • D. Plants do not compete with each other.

  2. Question 2

    Pond food web: algae are eaten by tadpoles and water fleas. Tadpoles and water fleas are eaten by small fish. Small fish are eaten by herons. If all the small fish died, what would probably happen to the tadpoles at first?

    • A. They would stay exactly the same
    • B. They would increase
    • C. They would decrease
    • D. They would turn into fish

  3. Question 3

    Why is a food web more realistic than a single food chain?

    • A. Food webs have no producers
    • B. Most animals eat, and are eaten by, more than one kind of living thing
    • C. Food webs only show plants
    • D. Animals only ever eat one food

  4. Question 4

    Food webs: which statement is NOT true?

    • A. Animals often compete for food, water and space.
    • B. Plants compete for light, water and minerals.
    • C. A food web contains only one food chain.
    • D. Predator and prey populations often rise and fall in cycles.

  5. Question 5

    Pond food web: algae are eaten by tadpoles and water fleas. Tadpoles and water fleas are eaten by small fish. Small fish are eaten by herons. If the small fish died, what would happen to the herons?

    • A. Nothing
    • B. They would decrease or move away
    • C. They would eat algae
    • D. They would increase

  6. Question 6

    Rabbits and sheep both eat grass in the same field. This is an example of…

    • A. decomposition
    • B. photosynthesis
    • C. predation
    • D. competition

  7. Question 7

    Food webs: which statement is NOT true?

    • A. Predator and prey populations often rise and fall in cycles.
    • B. Animals often compete for food, water and space.
    • C. Removing one species can affect many others in a food web.
    • D. Removing a predator always helps every other species.

  8. Question 8

    Pond food web: algae are eaten by tadpoles and water fleas. Tadpoles and water fleas are eaten by small fish. Small fish are eaten by herons. If all the small fish died, what would probably happen to the tadpoles at first?

    • A. They would increase
    • B. They would stay exactly the same
    • C. They would decrease
    • D. They would turn into fish

  9. Question 9

    Rabbits and sheep both eat grass in the same field. This is an example of…

    • A. decomposition
    • B. predation
    • C. photosynthesis
    • D. competition

  10. Question 10

    Food webs: which statement is NOT true?

    • A. Removing one species can affect many others in a food web.
    • B. Plants compete for light, water and minerals.
    • C. Animals often compete for food, water and space.
    • D. Removing a predator always helps every other species.

  11. Question 11

    Woodland food web: grass is eaten by rabbits and mice. Seeds are eaten by mice. Rabbits are eaten by foxes. Mice are eaten by foxes and owls. Which animal is eaten by two different predators?

    • A. mice
    • B. foxes
    • C. owls
    • D. rabbits

  12. Question 12

    Bees are declining. Why could this affect fruit farmers?

    • A. Bees eat fruit
    • B. Fruit trees need honey to grow
    • C. Bees make the rain
    • D. Fewer flowers would be pollinated, so less fruit forms

  13. Question 13

    Food webs: which statement is NOT true?

    • A. Predator and prey populations often rise and fall in cycles.
    • B. Removing a predator always helps every other species.
    • C. Plants compete for light, water and minerals.
    • D. Animals often compete for food, water and space.

  14. Question 14

    Woodland food web: grass is eaten by rabbits and mice. Seeds are eaten by mice. Rabbits are eaten by foxes. Mice are eaten by foxes and owls. If disease killed most rabbits, what might happen to the mice?

    • A. They increase, because foxes stop eating
    • B. Their numbers fall, because foxes eat more mice
    • C. They become rabbits
    • D. They stop eating seeds

  15. Question 15

    Why is a food web more realistic than a single food chain?

    • A. Animals only ever eat one food
    • B. Food webs only show plants
    • C. Most animals eat, and are eaten by, more than one kind of living thing
    • D. Food webs have no producers

  16. Question 16

    Food webs: which statement is NOT true?

    • A. Plants compete for light, water and minerals.
    • B. Plants do not compete with each other.
    • C. Predator and prey populations often rise and fall in cycles.
    • D. Animals often compete for food, water and space.

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  1. Plants do not compete with each other.
  2. They would increase
  3. Most animals eat, and are eaten by, more than one kind of living thing
  4. A food web contains only one food chain.
  5. They would decrease or move away
  6. competition
  7. Removing a predator always helps every other species.
  8. They would increase
  9. competition
  10. Removing a predator always helps every other species.
  11. mice
  12. Fewer flowers would be pollinated, so less fruit forms
  13. Removing a predator always helps every other species.
  14. Their numbers fall, because foxes eat more mice
  15. Most animals eat, and are eaten by, more than one kind of living thing
  16. Plants do not compete with each other.