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Checkpoint Biology 0893

Grade 6 - Unit 1: Cells and organisms

0/11 Dr Dabour Hub Science Diagram and Course Material

Grade 6 - Unit 4: Living organisms and classification

0/12 Dr Dabour Hub Science Diagram and Course Material

Grade 6 - Unit 7: Microorganisms and food webs

0/11 Dr Dabour Hub Science Diagram and Course Material

Grade 7 - Unit 1: Breathing and respiration

0/12 Dr Dabour Hub Science Diagram and Course Material

Grade 7 - Unit 4: Ecosystems

0/10 Dr Dabour Hub Science Diagram and Course Material

Grade 7 - Unit 7: Nutrition, health and movement

0/10 Dr Dabour Hub Science Diagram and Course Material

Grade 8 - Unit 1: Cells and organisms

0/10 Dr Dabour Hub Science Diagram and Course Material

Grade 8 - Unit 4: Living organisms and classification

0/12 Dr Dabour Hub Science Diagram and Course Material

Grade 8 - Unit 7: Microorganisms and food webs

0/10 Dr Dabour Hub Science Diagram and Course Material
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:
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1.
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
2.
Which statement correctly describes producer?
an organism that obtains energy by eating other organisms
an organism eaten by a predator
an organism that makes its own food
an organism that hunts another
3.
Use the pond food web. How many different food chains end with the heron?
Dr Dabour Hub Science Diagram and Course Material
2 food chains
4 food chains
3 food chains
6 food chains
4.
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
5.
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
6.
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
7.
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
8.
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
9.
Scientists counted lemmings and the Arctic foxes that hunt them on the same tundra for 12 years. Why does each fox peak come about a year after a lemming peak?
Dr Dabour Hub Science Diagram and Course Material
Plenty of prey lets more fox cubs survive, which takes time
Foxes eat grass, which grows best after lemmings leave
Lemmings hunt the foxes, so foxes rise when lemmings die
Fox numbers control the weather, which then affects lemmings
10.
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
11.
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
12.
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
13.
Which of these is the FIRST step in the correct order?
identify feeding relationships
combine chains into a web
identify the producer
draw arrows from food to consumer
14.
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
15.
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
16.
Use the kelp forest food web. How many primary consumers does it show?
Dr Dabour Hub Science Diagram and Course Material
Two primary consumers
Three primary consumers
Four primary consumers
Five primary consumers in all
17.
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
18.
Ellie counted clover plants in six randomly placed 1 m² quadrats. Estimate the number of clover plants in the whole field.
Dr Dabour Hub Science Diagram and Course Material
About 1 000 plants
About 30 plants
About 200 plants
About 1 600 plants
19.
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
20.
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 Science Diagram and Course Material
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
21.
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
22.
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
23.
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
24.
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
25.
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
26.
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
27.
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
28.
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
29.
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
30.
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
31.
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
32.
Which term is described as: an organism eaten by a predator?
producer
consumer
predator
prey
33.
Which term is described as: an organism that hunts another?
producer
consumer
prey
predator
34.
Which term is described as: an organism that obtains energy by eating other organisms?
producer
predator
prey
consumer
35.
Which term is described as: the way organisms in an ecosystem rely on one another?
interdependence
primary consumer
tertiary consumer
trophic level
36.
Fungi and bacteria that break down dead leaves and animal waste are called _____.
producers
decomposers
herbivores
predators
37.
At each step of a food chain, much of the energy is released as _____ during respiration.
heat energy
light energy
sound energy
new plant food
38.
An organism at trophic level 1 is always a _____.
top predator
decomposer
herbivore
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.
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
41.
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
42.
Plants take their food from the soil, so soil is the start of every food chain. True or false?
True – plants absorb all their food from soil
True – soil is a producer in every habitat
False – plants make food by photosynthesis
False – the Sun is the producer in a chain
43.
Most of the energy in the grass a rabbit eats is stored in its body, ready to pass on to a fox. True or false?
True – rabbits store almost all the energy they eat
True – energy increases as it moves up a chain
False – the energy all passes straight to the soil
False – most is lost in respiration, movement and waste
44.
In the chain algae → water flea → stickleback → heron, the heron is a tertiary consumer. True or false?
False – it is a secondary consumer
True – it is the third consumer in the chain
False – it is the primary consumer
True, but only when it eats plants
45.
Interdependence means organisms in an ecosystem rely on one another. - True or false?
True
False
46.
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 Science Diagram and Course Material
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
47.
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
48.
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
49.
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
50.
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
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Part of Grade 8 - Unit 7: Microorganisms and food webs — see every lesson and quiz in this unit.
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