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Predict what happens when a food web changes

5th grade (Year 6 in England) · 16 questions · Common Core: NGSS.5-LS2-1 · England: KS2 Y6 Living things and their habitats, KS3 Biology: Interactions and interdependencies

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1
Question 1
What is a likely knock-on effect: warmer seas bleach coral reefs?
- A. insect-eating birds have less food
- B. birds that eat small fish have less food
- C. rabbit numbers rise and more grass is eaten
- D. reef fish lose food and shelter
2
Question 2
Wolves were brought back to Yellowstone National Park. Deer stopped overeating young trees along rivers. What does this show?
- A. Wolves eat trees.
- B. Trees grow only near wolves.
- C. A change to one predator can affect plants and the whole ecosystem.
- D. Deer and wolves never interact.
3
Question 3
True or false? Changing one population never affects others in the web.
- A. True
- B. False
4
Question 4
What is a likely knock-on effect: foxes are removed from an island?
- A. rabbit numbers rise and more grass is eaten
- B. reef fish lose food and shelter
- C. insect-eating birds have less food
- D. birds that eat small fish have less food
5
Question 5
Why is a food web with many links more stable than a single food chain?
- A. Webs have fewer animals.
- B. Chains are always longer.
- C. Webs need no producers.
- D. If one food runs short, animals can eat something else.
6
Question 6
True or false? Removing a predator can cause its prey to increase.
- A. True
- B. False
7
Question 7
What is a likely knock-on effect: warmer seas bleach coral reefs?
- A. birds that eat small fish have less food
- B. rabbit numbers rise and more grass is eaten
- C. reef fish lose food and shelter
- D. insect-eating birds have less food
8
Question 8
Wolves were brought back to Yellowstone National Park. Deer stopped overeating young trees along rivers. What does this show?
- A. Deer and wolves never interact.
- B. A change to one predator can affect plants and the whole ecosystem.
- C. Trees grow only near wolves.
- D. Wolves eat trees.
9
Question 9
True or false? If producers die, every animal in the web is affected.
- A. True
- B. False
10
Question 10
What is a likely knock-on effect: a pesticide kills most of the insects in a field?
- A. birds that eat small fish have less food
- B. reef fish lose food and shelter
- C. rabbit numbers rise and more grass is eaten
- D. insect-eating birds have less food
11
Question 11
In a meadow, rabbits are eaten by foxes. A disease kills many rabbits. What will probably happen to the foxes?
- A. They will start eating grass.
- B. They will grow bigger.
- C. They will struggle to find food and their numbers may fall.
- D. Their numbers will rise quickly.
12
Question 12
True or false? Food webs only include animals.
- A. True
- B. False
13
Question 13
What is a likely knock-on effect: warmer seas bleach coral reefs?
- A. insect-eating birds have less food
- B. reef fish lose food and shelter
- C. birds that eat small fish have less food
- D. rabbit numbers rise and more grass is eaten
14
Question 14
Why is a food web with many links more stable than a single food chain?
- A. If one food runs short, animals can eat something else.
- B. Chains are always longer.
- C. Webs have fewer animals.
- D. Webs need no producers.
15
Question 15
True or false? Changing one population never affects others in the web.
- A. True
- B. False
16
Question 16
What is a likely knock-on effect: warmer seas bleach coral reefs?
- A. birds that eat small fish have less food
- B. reef fish lose food and shelter
- C. rabbit numbers rise and more grass is eaten
- D. insect-eating birds have less food

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