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HIA International — Grade 8

Unit 1: Photosynthesis and the carbon cycle

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Unit 2: Properties of materials

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Unit 3: Forces and energy

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Unit 4: Maintaining life

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Unit 5: Reactivity

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Unit 6: Sound and space

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Unit 7: Genes and inheritance

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Unit 8: Rates of reaction

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Unit 9: Electricity

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Quiz

Checkpoint Grade 8 Unit 7 – 7.2 Food Chains And Webs

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Food Chains And Webs Checkpoint Biology quiz set 2: free practice for Cambridge Checkpoint Biology 0893. Work through this Food Chains And Webs Checkpoint Biology quiz set 2 and get instant feedback on every answer. If you get stuck, review the 9.2 Food chains and webs lesson. More practice: Cambridge Checkpoint Biology 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 50
  • Passing grade: B+
  • Time limit:
Start Quiz
1.
Which statement correctly describes prey?
an organism that makes its own food
an organism that hunts another
an organism eaten by a predator
an organism that obtains energy by eating other organisms
2.
A poster shows how energy is lost between trophic levels. Which pairing is correct?
Photosynthesis – energy lost by every herbivore
Waste – energy left in undigested food in faeces
Growth – energy lost as heat to the air
Movement – energy gained from the Sun directly
3.
Use the rock pool table. Which is the longest correct food chain that can be built from it?
seaweed → periwinkle → dog whelk → herring gull
seaweed → periwinkle → dog whelk → herring gull → shore crab
seaweed → limpet → dog whelk → shore crab → herring gull
seaweed → limpet → herring gull
4.
A grower released ladybirds, which eat aphids, into a greenhouse in week 3. Why did the number of ladybirds fall after week 6?
Dr Dabour Hub Academy - figure 1
The aphids began to hunt the ladybirds
Ladybirds only live for exactly six weeks
The plants had grown too big for the ladybirds
The aphids they fed on had become scarce
5.
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 3
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 3
A
B
C
D
6.
Omar fed a caterpillar on cabbage leaves for a week. Assume all leaf mass not lost in faeces or added to its body was used in respiration. What mass was that?
About 3.7 g
About 4.1 g
About 6.3 g
About 8.9 g
7.
Each option links a feeding term with an example from a kelp forest. Which pairing is correct?
Herbivore – sea urchin grazing on kelp
Producer – sea otter eating crabs
Carnivore – abalone feeding only on kelp
Omnivore – kelp using sunlight
8.
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 7
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 7
A
B
C
D
9.
A field kit list links sampling equipment with its use in a food web study. Which pairing is correct?
Quadrat – catching insects that fly past
Sweep net – counting plants in 1 m²
Pitfall trap – catching beetles on the ground
Pitfall trap – sampling birds in trees
10.
Usually there are more producers than herbivores in a food chain. Use the oak tree survey. What best explains the pattern here?
The oak is not a true producer because it is a tree
Energy increases at each step up this food chain
One huge oak holds enough food for thousands of caterpillars
Caterpillars can also make food by photosynthesis
11.
Use the pond food web. How many different food chains end with the heron?
Dr Dabour Hub Academy - figure 2
2 food chains
4 food chains
3 food chains
6 food chains
12.
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 6
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 6
A
B
C
D
13.
Which practical work belongs to Food Chains And Webs?
Plan an investigation into how temperature affects the rate of decay
Add microorganisms to food-web models and connect decomposition with nutrient cycling
Use sterile technique and observe colonies without opening cultures
Interpret feeding relationships and check arrow direction from food to consumer
14.
Which step comes immediately after "identify feeding relationships"?
identify the producer
combine chains into a web
draw arrows from food to consumer
15.
The diagram shows the energy in each level of a meadow food chain. What percentage of the energy in the grasshoppers is passed on to the shrews?
Dr Dabour Hub Academy - figure 3
About 90%
About 0.9%
About 9%
About 11%
16.
Think about the Antarctic chain phytoplankton → krill → Adélie penguin → leopard seal. Which pairing is correct?
Phytoplankton – trophic level 2
Leopard seal – trophic level 3
Adélie penguin – trophic level 4
Krill – trophic level 2
17.
In the chain seaweed → limpet → shore crab → gull, where did the energy in the gull first come from?
The limpets the crab ate
Minerals in the seawater
Heat released by the crabs
Sunlight trapped by the seaweed
18.
Which is a limitation of using a single food chain to describe feeding in a habitat?
It shows one food per animal, but most eat several
It cannot show the direction of energy flow
It always starts with a consumer instead of a producer
It includes too many organisms to be understood
19.
Which statement correctly describes consumer?
an organism that makes its own food
an organism eaten by a predator
an organism that obtains energy by eating other organisms
an organism that hunts another
20.
Zara wants to test whether ladybirds reduce aphid numbers on bean plants. Which plan is best?
One plant with aphids and ladybirds, counted once after a week
Two sets of caged plants with aphids; add ladybirds to one set only
Two plants, one in sun and one in shade, both with ladybirds
Many plants with ladybirds only, counting ladybirds each day
21.
Decomposers are often left out of food web drawings. Why are they still vital to the web?
They make food by photosynthesis for herbivores
They are top predators that control all others
They recycle nutrients from dead matter into the soil
They provide heat energy to the producers
22.
Which definition should be paired with producer?
an organism eaten by a predator
an organism that makes its own food
an organism that obtains energy by eating other organisms
an organism that hunts another
23.
Which statement correctly describes predator?
an organism that makes its own food
an organism that obtains energy by eating other organisms
an organism eaten by a predator
an organism that hunts another
24.
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 1
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 1
A
B
C
D
25.
Large fishing boats begin catching huge amounts of krill in the Southern Ocean. Use the food web. Which animal would be affected only indirectly?
Dr Dabour Hub Academy - figure 4
The blue whale, as it is the largest animal in the web
The Adélie penguin, as it is eaten by leopard seals
The crabeater seal, as it is lower in the web
The leopard seal, as it does not eat krill itself
26.
Pitfall traps are covered with a raised lid and emptied every morning. Why are they emptied so often?
So the traps catch more animals the next day
So the lid can be moved to a new site every single day
So trapped animals do not starve or eat each other
So that plants can grow inside the empty trap
27.
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 2
IGCSE Biology 19.2 Food chains, food webs and pyramids - Question 2
A
B
C
D
28.
Use the table. Whose estimate of daisy numbers is most trustworthy?
Leo's – it found the most daisies of all
Priya's – random placing and many quadrats
Sam's – it has the smallest and safest value
All three are equally trustworthy estimates
29.
Nile perch, a large predatory fish, were added to the lake in the 1960s. Which explanation best fits the data?
The small fish ate the perch eggs, so perch increased
The perch were producers that fed the small fish
The small fish increased because perch gave them food
The perch ate the small fish, which then declined
30.
Ellie counted clover plants in six randomly placed 1 m² quadrats. Estimate the number of clover plants in the whole field.
Dr Dabour Hub Academy - figure 5
About 1 000 plants
About 30 plants
About 200 plants
About 1 600 plants
31.
Kwame set four pitfall traps at each site. Which conclusion is best supported by his results?
Both sites have about the same number of beetles
More beetles live by the hedge; field trap 3 looks anomalous
The field has most beetles because one trap caught 21
No conclusion is possible because traps were used
32.
Use the kelp forest food web. How many primary consumers does it show?
Dr Dabour Hub Academy - figure 6
Two primary consumers
Three primary consumers
Four primary consumers
Five primary consumers in all
33.
In a garden, hedgehogs eat beetles and slugs, and beetles also eat slugs. A pesticide kills most beetles. Which prediction is best reasoned?
Slugs may rise, as fewer beetles eat them
Slugs must fall, as hedgehogs always eat more
Hedgehogs must die out, as beetles are their only food
Nothing changes, as slugs are not in the food web
34.
Which term is described as: an organism eaten by a predator?
producer
consumer
predator
prey
35.
Which term is described as: an organism that hunts another?
producer
consumer
prey
predator
36.
Which term is described as: an organism that obtains energy by eating other organisms?
producer
predator
prey
consumer
37.
Which term is described as: the way organisms in an ecosystem rely on one another?
interdependence
primary consumer
tertiary consumer
trophic level
38.
Which term is described as: an organism that makes its own food?
consumer
predator
prey
producer
39.
In the chain oak leaves → winter moth caterpillar → great tit → sparrowhawk, the great tit is at trophic level _____.
1 (producer)
2 (primary consumer)
3 (secondary consumer)
4 (tertiary consumer)
40.
An organism at trophic level 1 is always a _____.
top predator
decomposer
herbivore
producer
41.
Fungi and bacteria that break down dead leaves and animal waste are called _____.
producers
decomposers
herbivores
predators
42.
A disease that kills most of one type of herbivore can cause the plants it fed on to increase. True or false?
False – plants never change when animals die
False – the plants would also catch the disease
True, but only if the plants are carnivores
True – fewer of those plants are being eaten
43.
Buzzards hunt rabbits. Using the table, Sofia concludes that rabbits must be the buzzards' only food. True or false?
True – buzzard numbers fell as soon as the rabbits died
True – buzzards and rabbits both fell to zero
False – the table shows that buzzards feed mostly on grass
False – many buzzards survived, so they must eat other prey too
44.
After sweep-netting insects in a meadow to study its food web, it is good practice to release them where they were caught. True or false?
False – they should be kept to count next year
False – released insects will upset the food web
True – it limits harm to the habitat
True, but only for insects that are predators
45.
Algae in a pond are consumers because they live alongside animals in the water. True or false?
True – anything living in pond water counts as a consumer
True – algae eat the water fleas in the pond
False – algae photosynthesise, so they are producers
False – algae are decomposers of dead animals
46.
A carnivore can never be a primary consumer. True or false?
True – primary consumers eat producers
False – carnivores eat plants when prey is scarce
False – all carnivores are primary consumers
True, but only if it is also a top predator
47.
From the lemming and fox graph, Noor concludes: "This proves that the foxes alone cause every crash in lemming numbers." True or false?
Dr Dabour Hub Academy - figure 7
False – it shows a link, but other causes may matter
True – fox numbers are always highest when lemmings crash
True – lemmings have no other predators or needs
False – the graph shows lemmings cause fox numbers to crash
48.
Interdependence means organisms in an ecosystem rely on one another. - True or false?
True
False
49.
In the chain kelp → sea urchin, the arrow shows energy moving from the kelp to the sea urchin. True or false?
False – it shows the urchin giving energy to kelp
True – arrows show energy transfer
False – the arrow means the kelp eats the urchin
True, but only during the daytime
50.
Song thrushes eat snails. Killing all the snails in a garden could make the number of thrushes there fall. True or false?
True – the thrushes would lose a source of food
False – thrushes would gain more energy
False – snails are not linked to thrushes
True, but only because snails prey on thrushes
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Part of Unit 7: Genes and inheritance — see every lesson and quiz in this unit.
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