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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 4 – 4.1 Characteristics Of Living Organisms

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Characteristics Of Living Organisms Checkpoint Biology quiz set 2: free practice for Cambridge Checkpoint Biology 0893. Work through this Characteristics Of Living Organisms Checkpoint Biology quiz set 2 and get instant feedback on every answer. If you get stuck, review the 8.1 Characteristics of living organisms 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 nutrition?
chemical reactions that release energy in cells
producing new organisms
taking in or making nutrients
a permanent increase in size or dry mass
2.
Which statement correctly describes respiration?
taking in or making nutrients
producing new organisms
chemical reactions that release energy in cells
a permanent increase in size or dry mass
3.
Which statement correctly describes growth?
taking in or making nutrients
chemical reactions that release energy in cells
producing new organisms
a permanent increase in size or dry mass
4.
Which statement correctly describes reproduction?
taking in or making nutrients
a permanent increase in size or dry mass
producing new organisms
chemical reactions that release energy in cells
5.
Which of these is the FIRST step in the correct order?
look for a life process
justify the classification
observe the example
name the characteristic
6.
Which step comes immediately after "look for a life process"?
observe the example
justify the classification
name the characteristic
7.
Which practical work belongs to Characteristics Of Living Organisms?
Use evidence to discuss why viruses sit at the boundary between living and non-living
Use reproductive evidence and observable features to compare organisms
Follow paired-choice questions accurately and check identification against observable features
Apply the seven characteristics to living, non-living and once-living examples
8.
Sami grew bean seedlings and measured fresh mass and dry mass (graph). The pot dried out on day 5 and was watered again on day 7. What is the best judgement about day 4 to day 6?
Dr Dabour Hub Science Diagram and Course Material
Growth stopped, since the fresh mass fell by 6 g
Growth continued: dry mass rose while water was lost
The seedlings shrank for good, since fresh mass fell
Dry mass fell too, so the seedlings began to die
9.
A potted plant was kept in a sealed chamber with a carbon dioxide sensor for two days (graph). Which statement explains the pattern?
Dr Dabour Hub Science Diagram and Course Material
It respires all the time; in light, photosynthesis uses CO₂ faster
It respires only in the dark and photosynthesises only in light
CO₂ rises in the dark because the plant stops respiring then
It excretes oxygen at night, which turns into carbon dioxide
10.
The amoeba in the diagram detects a bacterium, flows towards it and surrounds it with extensions like P. The bacterium ends up digested in a vacuole like Q. Which characteristics of living organisms does this show?
Dr Dabour Hub Science Diagram and Course Material
Growth, excretion and reproduction
Nutrition only, as it cannot sense food
Sensitivity, movement and nutrition
Respiration only, as it takes in oxygen
11.
Keira touched one leaf of a mimosa plant and recorded the percentage of its leaflets that were folded (graph). Which conclusion is best supported?
Dr Dabour Hub Science Diagram and Course Material
The folding is permanent, so it shows the plant is growing
It takes about 15 minutes to detect the touch and respond
Plants cannot move, so the folding must be caused by wind
It responds within seconds and reopens in about 15 minutes
12.
Yeast is a single-celled fungus. The graph shows the number of yeast cells in a flask of sugar solution. Which characteristic mainly explains the rise, and what is a likely reason the curve levels off?
Dr Dabour Hub Science Diagram and Course Material
Growth of each cell; the cells have become too big
Reproduction; the sugar they feed on is running out
Reproduction; the yeast cells stop needing any food
Excretion; the cells stop making waste after 20 hours
13.
In this apparatus the coloured drop moved 24 mm towards the maggots in 10 minutes. In an identical tube with glass beads instead of maggots it did not move. What does this show?
Dr Dabour Hub Science Diagram and Course Material
The maggots took in oxygen for respiration; their CO₂ was absorbed
The maggots gave out oxygen, which pushed the drop along the tube
The soda lime made gas that pushed the drop towards the maggots
The glass beads respired faster than the maggots, so it did not move
14.
The graph shows the dry mass of maize seedlings after sowing. Their shoots and roots got longer every day, yet dry mass fell until day 6. What is the best explanation?
Dr Dabour Hub Science Diagram and Course Material
The seedlings were not growing at all until their first leaves had opened
The seedlings lost water in the first six days, which lowered their dry mass
Dry mass fell because the seedlings excreted food through their new roots
Stored food was used up in respiration before the leaves could photosynthesise
15.
Which conclusion is best supported by the data in the table?
Dry peas are dead, as they use so little oxygen
Glass beads may be alive but respire too slowly to see
Dry peas are probably alive, but respiring very slowly
Earthworms do not respire, as they use less than peas
16.
A farmer weighed a growing pumpkin every week. During which week did it grow fastest, and by how much?
Week 2 to 3, gaining 3.5 kg
Week 4 to 5, when it reached 13 kg
Week 0 to 1, gaining 3.5 kg
Week 1 to 2, gaining 6.0 kg
17.
Which statement correctly links breathing and respiration in these results?
Breathing is respiration, so they simply increase together
Muscle cells respire faster, so more CO₂ must be breathed out
The lungs make the extra CO₂ when breathing speeds up
Muscles stop respiring when running, so breathing rises
18.
Which two tubes should be compared to show that seeds need oxygen to germinate, and why?
A and B; B has no oxygen in its cotton wool
B and C; these are the tubes where least grew
A and C; the fridge takes oxygen out of the air
A and D; D lacks oxygen, which seeds need to respire
19.
Which statement correctly describes the results and names the characteristic of living organisms shown?
Pupils get bigger as light increases – sensitivity
Pupils get smaller as light increases – growth
Pupils get smaller as light increases – sensitivity
Pupil size does not depend on light – nutrition
20.
Tom tested how quickly he responds to seeing a ruler drop, which is a test of sensitivity. Which value is anomalous, and what is the mean without it?
25 cm; the mean is 13 cm
12 cm; the mean is 16.3 cm
25 cm; the mean is 15.4 cm
14 cm; the mean is 15.75 cm
21.
Leo finds a green crust on a rock and wants to find out, over several weeks, whether it is a living organism. Which plan would give the best evidence?
Scrape it off, weigh it once, and decide from how heavy the whole crust is
Watch it for ten minutes to see if it moves, and call it non-living if not
Check whether its colour is green, since only living things are ever green
Photograph its area weekly, look for cells with a microscope and check for new patches
22.
Students grow bread mould on agar plates to observe it over a week. Why must the lids stay taped shut throughout?
The mould will die straight away if it meets fresh air
Mould spores could be breathed in and cause allergies
Taping the lid lets the mould photosynthesise more
An open plate means the mould cannot carry out growth
23.
A goldfish has no lungs and does not breathe air. Which statement is correct?
Its cells still respire; gills take in oxygen from the water
It cannot carry out respiration, since it has no lungs
It respires only in its gills, not in its other cells
It gets all the energy it needs by breathing in water
24.
A potato left in a dark cupboard grows long white shoots. The shoots bend towards a crack of light under the door. Which characteristics does this show?
Excretion and nutrition
Reproduction and excretion
Growth and sensitivity
Only nutrition by photosynthesis
25.
A Venus flytrap is a green plant that also snaps its leaves shut on insects and digests them. Which statement is correct?
It is an animal, because it moves quickly and eats insects
It gets all its food from insects, so it does not photosynthesise
Snapping shut shows growth, as the leaf changes shape
The snapping shows sensitivity and movement; it photosynthesises too
26.
A coral on a reef looks like a rock. Which observation would give the strongest evidence that it is a living organism?
It is hard and gets slowly bigger as minerals collect on it
It is made of cells and releases eggs that grow into new corals
It is brightly coloured and found in water near living fish
It moves slightly back and forth as the waves pass over it
27.
A mushroom growing on a fallen log has no green parts. How does it carry out nutrition?
It absorbs food from the dead wood it grows on
It photosynthesises using light hitting its cap
It does not need nutrition, as it cannot move
It makes food from the carbon dioxide it breathes
28.
Match each non-living thing to the characteristic of living organisms it only appears to show. Which pairing is correct?
Candle flame – appears to excrete urine
Crystal in a solution – appears to grow
Robot toy – appears to reproduce itself
Stone on a beach – appears to respire
29.
Match each organism to how it obtains its nutrition. Which pairing is correct?
Maize plant – makes food by photosynthesis
Bracket fungus – makes food by photosynthesis
Tapeworm – makes food by photosynthesis
Grass – eats and digests other organisms
30.
Match each observation to the characteristic it is evidence for. Which pairing is correct?
A strawberry plant sends out runners with new plants – excretion
A woodlouse curls up when touched – nutrition
Limewater near germinating seeds turns milky – respiration
A caterpillar's mass rises from 1 g to 3 g – reproduction
31.
Match each organ or structure to a characteristic of living organisms it carries out. Which pairing is correct?
Stomach – excretion of carbon dioxide
Muscles – reproduction of offspring
Leaves – egestion of undigested food
Gut – nutrition, by digesting food
32.
Which term is described as: taking in or making nutrients?
respiration
reproduction
nutrition
growth
33.
Which term is described as: chemical reactions that release energy in cells?
nutrition
reproduction
respiration
growth
34.
Which term is described as: a permanent increase in size or dry mass?
nutrition
respiration
reproduction
growth
35.
Which term is described as: producing new organisms?
nutrition
respiration
growth
reproduction
36.
The bacteria in the table reproduce by dividing in two at a steady rate. If conditions stay ideal, the number at 80 minutes will be _____.
1000 bacteria
1600 bacteria
1200 bacteria
3200 bacteria
37.
In a cell, most of the reactions of respiration take place in the _____.
mitochondria
nucleus of the cell
cell wall only
vacuole of sap
38.
Removing undigested food, such as fibre, from the body as faeces is called _____, not excretion.
respiration
reproduction
secretion
egestion
39.
A bean seed is planted upside down, but its root still turns and grows downwards. The root is responding to the stimulus of _____.
sunlight from above
sound waves nearby
gravity pulling down
warmth of the soil
40.
In a humpback whale, respiration and breathing are the same process. True or false?
True – both mean taking air into the lungs
True – whales respire only when they surface
False – respiration happens in cells
False – whales do not carry out respiration
41.
A copper sulfate crystal growing in a solution shows growth in the same way as an organism, because it gets permanently bigger by making new cells. True or false?
False – it is not made of cells at all
True – any permanent increase in size is growth
True – crystals show all seven characteristics
False – crystals can never get any bigger
42.
Urea is excreted because it is a waste product made by chemical reactions in the body's cells. True or false?
False – urea is undigested food
False – urea is removed by egestion
True, but only when too much is drunk
True – it is made by cell reactions
43.
A sunflower head turning to face the Sun as it moves across the sky is an example of movement in a plant. True or false?
False – plants cannot move any part
True – part of the plant moves
False – this is an example of growth
True, but only in plants with muscles
44.
Movement in living organisms always means that the whole organism changes its place. True or false?
False – moving part of the body counts
True – only travelling counts as movement
True – so plants cannot show movement
False – movement means getting bigger
45.
Viruses are usually not called living because they show only reproduction, and only inside a host cell. True or false?
False – viruses show all seven of them
False – viruses respire outside cells
True, but only because they are so small
True – they lack the other characteristics
46.
Carbon dioxide breathed out is excreted, even though it leaves through the lungs rather than the kidneys. True or false?
False – only urine counts as excretion
False – breathing out is egestion
True – it is a waste made in cells
True, but only when exercising hard
47.
Sensitivity is found only in animals, because plants have no eyes, ears or nerves. True or false?
True – sensing needs eyes, ears or nerves
False – roots and shoots respond to stimuli
True – plants respond only by photosynthesis
False – plants have small eyes on each leaf
48.
A thermostat that switches on a heater when it detects the room is cold shows sensitivity, so it is a living organism. True or false?
False – it has no cells and lacks other characteristics
True – it responds to a change in its surroundings
True – anything showing sensitivity is alive
False – a thermostat does not respond to anything
49.
A young oak tree gets bigger partly because its cells divide to make more cells. True or false?
False – plant cells can never divide
False – trees grow only by taking in water
True, but only while the tree is flowering
True – growth involves cell division
50.
Taking in minerals such as nitrates from the soil is part of nutrition in a green plant, as well as making food by photosynthesis. True or false?
False – nutrition means photosynthesis only
False – minerals are taken in by excretion
True – nutrition includes taking in materials
True, but only for plants kept in the dark
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Part of Grade 8 - Unit 4: Living organisms and classification — see every lesson and quiz in this unit.
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