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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

4.2 Different Ecosystems

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Different Ecosystems Checkpoint Biology quiz: free practice for Cambridge Checkpoint Biology 0893. Work through this Different Ecosystems Checkpoint Biology quiz and get instant feedback on every answer. If you get stuck, review the 5.2 Different ecosystems lesson. More practice: Cambridge Checkpoint Biology 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 42
  • Passing grade: B+
  • Time limit:
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1.
A coral reef and a rainforest are both examples of:
Food chains only
Organs
Populations of one species
Ecosystems
2.
The diagram describes four levels of organisation in a pond, labelled P, Q, R and S. Which letter shows a community?
Dr Dabour Hub Science Diagram and Course Material
Letter P
Letter Q
Letter R
Letter S
3.
Mia sampled the water in a pond once a month for eight months. She measured the water temperature and the dissolved oxygen each time. Which conclusion does the graph support?
Dr Dabour Hub Science Diagram and Course Material
Warmer pond water holds less dissolved oxygen
Warmer pond water holds more dissolved oxygen
There is no pattern between the two abiotic factors
Dissolved oxygen stays the same all through the year
4.
Omar placed a quadrat every 4 m along a line from a sunny field into a wood. At each quadrat he estimated the grass cover and measured the light. Which conclusion fits his results?
Dr Dabour Hub Science Diagram and Course Material
Grass cover rises the further he goes into the wood
The grass is causing the shade inside the wood
Light has no link with how much grass grows there
Grass cover falls as the light gets dimmer
5.
The graph shows the mean temperature and yearly rainfall of four ecosystems, W, X, Y and Z. In which ecosystem would you expect many plants to have leaves with drip tips?
Dr Dabour Hub Science Diagram and Course Material
W, which is hot with very high rainfall
Y, which is hot with very little rainfall
X, which is very cold and quite dry
Z, which is warm with moderate rainfall
6.
The drawings show four kinds of leaf, A to D. Which leaf is most likely from a tree in a tropical rainforest, and why?
Dr Dabour Hub Science Diagram and Course Material
D – its round shape lets it float on water
C – thin spines let it take in more rain
A – its long tip lets rainwater drip off
B – its small size lets it catch more light
7.
Zara placed the quadrat shown on a shady bank. Each small square is either fully covered by moss or bare. What is the percentage cover of moss in this quadrat?
Dr Dabour Hub Science Diagram and Course Material
9% moss cover
36% moss cover
25% moss cover
64% moss cover
8.
Ben counted the daisies in five quadrats placed at random on the school field. What is the mean number of daisies per quadrat?
55 daisies per quadrat
7 daisies per quadrat
12 daisies per quadrat
11 daisies per quadrat
9.
Leo measured a rock pool on a beach every 2 hours after the sea had left it. What is the most likely effect on the pool animals just before the tide returns?
They have less oxygen and are warmer
They have more oxygen as the water warms up
The pool cools down, so they become less active
Nothing changes, since abiotic factors stay fixed
10.
Nina grew two species of duckweed, A and B, in tanks of pond water. Some tanks had one species alone and one tank had both together. Which conclusion is best supported?
B grows better with A than it does on its own
The two duckweed species do not compete at all
A out-competes B when they grow together
A grows best of all when it is mixed with B
11.
Hassan filled rubber gloves with different amounts of lard (fat) and timed how long he could keep his gloved hand in iced water. What do his results model?
Polar animals need fat to float on the icy sea water
Thick fat under a polar animal's skin keeps heat in
Fat makes an animal lose heat faster in cold water
Fat layers work only when the animal is out of water
12.
The table shows data for plants at different heights in a tropical rainforest. Which explanation fits the pattern?
Tall trees need the largest leaves to shed rain
Small leaves are best where the light is poor
Leaf size is not linked to light in a rainforest
In dim light, larger leaves catch more light
13.
Which of these is an abiotic factor in a tropical rainforest?
The amount of rain that falls each year
Monkeys eating the fruit of the trees
Fungi breaking down fallen leaves
Vines competing with trees for light
14.
Nadia thinks moss grows best where the soil is wettest in a wood. What should she record at each of her quadrats?
Only the moss cover in one quadrat
The air temperature at her school
The number of birds in the trees
Moss cover and soil moisture
15.
Water lily leaves are wide and flat and float on the surface of a pond. How does this help the plant?
They sink to take in minerals from the mud
They are held in the light for photosynthesis
They stop fish from reaching the air to breathe
They trap rainwater so the plant can store it
16.
A wide road is cut through a tropical rainforest and many tall trees are removed. Which prediction is most likely?
Only the trees are affected, as animals can move away
The number of species in the area will increase
Canopy animals lose food and shelter, so they decrease
Rainfall stops, so the rainforest becomes a desert at once
17.
Young tree seedlings grow on the floor of a dense forest beneath tall trees. Which resource are they most likely to be competing for?
Light for photosynthesis
Mates from the same species
Territory to defend from rivals
Oxygen from the forest air
18.
Leila says a rotting log is too small to be an ecosystem. Sam says it is an ecosystem. Who is right, and why?
Leila – an ecosystem must be as large as a forest
Sam – organisms there interact with the conditions
Leila – a log is dead, so it has no living parts
Sam – a log is an ecosystem because it is made of wood
19.
Camels store most of their fat in a hump instead of in a layer under all of their skin. Why is this useful in a hot desert?
The hump is full of water, so the camel never drinks
A fat layer everywhere would help the camel keep cool
The hump reflects sunlight away from the camel's back
Heat can escape from the rest of the body
20.
Each option pairs an ecosystem with an adaptation found there. Which pairing is correct?
Polar region – large ears that lose heat
Ocean – long roots that reach deep water
Tropical rainforest – drip-tip leaves
Pond – spines that reduce water loss
21.
Each option pairs a key term with a meaning. Which pairing is correct?
Population – all of one species in an area
Community – one species together with its habitat
Habitat – all organisms plus the non-living environment
Biome – a small damp place underneath a log
22.
Each option pairs a factor in a woodland with a type of factor. Which pairing is correct?
Disease in the deer – abiotic factor
Competition for light – abiotic factor
Air temperature – biotic factor
Soil pH – abiotic factor
23.
Each option pairs organisms with a resource they compete for. Which pairing is correct?
Seedlings on a forest floor – mates
Robins in a garden – territory
Cacti in a desert – territory to defend
Male deer in a forest – minerals from soil
24.
An ecosystem includes:
Living organisms and their non-living environment
Only the weather
Only plants
Only animals
25.
Which factor can change the size of a population?
Name of species
Time of day
Colour of animals
Amount of food
26.
Aisha surveyed a pond and recorded the results in the table. The pond community contains _____ populations.
one hundred and ninety-three
just one single
five different
two main
27.
Polar bears have thick fur and a layer of _____ under the skin that keeps heat in.
fat called blubber
stored water
air bubbles
thin feathers
28.
A small area within a habitat that has its own conditions, such as the damp, dark space under a log, is called a _____.
population
food chain
tropical biome
microhabitat
29.
In a meadow, all the grasses, daisies, rabbits and beetles living together make up a _____.
population
community
single species
habitat only
30.
The place where an organism lives is its __________.
community
niche
habitat
population
31.
An ecosystem is more than just a place - it includes the organisms and their interactions. - True or false?
True
False
32.
A class cut a patch of grass and a patch of buttercups to 2 cm tall and measured their regrowth. They concluded: "This proves that every grassland plant regrows quickly after grazing." True or false?
False – only two kinds of plant were tested
True – the statement is correct
True, because the grass regrew by 5 cm
True, but only for plants that have flowers
33.
A population is all the organisms of different species that live in the same area. True or false?
True – the statement is correct
False – that describes a community
True, but only for animal species
False – that describes a habitat
34.
The pH of the soil and the amount of oxygen dissolved in a pond are both abiotic factors. True or false?
False – the statement is wrong
False – oxygen is made by living things, so it is biotic
True, but only in freshwater ecosystems
True – the statement is correct
35.
Leaves with drip tips help rainforest plants because rainwater runs off them quickly. True or false?
True – the statement is correct
False – the statement is wrong
False – drip tips collect water to store it
True, but only in the dry season
36.
If disease kills many lions in a grassland, the number of zebra may rise and then the amount of grass may fall. True or false?
False – the statement is wrong
False – zebra do not depend on lions in any way
True – the statement is correct
False – grass would increase as lions eat grass
37.
Ali wrote: "Light is a biotic factor because plants need it to live." True or false?
True – the statement is correct
False – light is an abiotic factor
True, because light comes from the Sun
True, but only for green plants
38.
Animals in the same habitat may compete with each other for food, water, mates and territory. True or false?
False – the statement is wrong
False – animals only ever compete for food
True, but only animals of different species
True – the statement is correct
39.
Using ten quadrats instead of two to count plants in a meadow gives a more reliable mean. True or false?
False – the statement is wrong
False – two quadrats are always enough
True – the statement is correct
True, but only if they are all in one place
40.
A large ocean and a small rock pool cannot both be ecosystems because they are such different sizes. True or false?
True – the statement is correct
True, because only large areas count
True, but only if there are fish in the pool
False – ecosystems can be any size
41.
Mosses and lichens are common in polar ecosystems because they can survive very cold, frozen conditions. True or false?
False – the statement is wrong
False – no plants grow in polar regions
True – the statement is correct
True, but only on warm summer days
42.
If the water in a pond becomes much warmer, only the fish are affected; the plants and snails are not. True or false?
True – the statement is correct
False – many organisms are affected
True, because plants do not need water
True, but only in the winter months
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Part of Grade 7 - Unit 4: Ecosystems — see every lesson and quiz in this unit.
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