16702066
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace casi 6 años
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Pregunta 1
Pregunta
The diagram represents the carbon cycle.
Which process is represented by arrow X?
Image:
Q5 (binary/octet-stream)
Respuesta
-
A combustion
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B feeding
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C photosynthesis
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D respiration
Pregunta 2
Pregunta
The graph shows the increase in the human population of the world since 1630.
What was the longest time taken for the population to double?
Image:
Q6 (binary/octet-stream)
Respuesta
-
A 100 years
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B 200 years
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C 300 years
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D 400 years
Pregunta 3
Pregunta
The graphs show the number of carnivores in a habitat over a period of time.
At time X the herbivores in their food chain are removed from the habitat.
Which graph shows the effect of this on the number of carnivores?
Image:
Q21 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 4
Pregunta
The diagram shows the positions of four farms and the concentrations of nitrate at different points in a river.
Which farm is likely to have been using too much fertiliser on its land?
Image:
Q39 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 5
Pregunta
The table shows some information about two closely related species of sea bird.
Sewage pollution at the mouth of a river destroys its fish stocks.
What is likely to happen to local populations of these birds?
Image:
Q40 (binary/octet-stream)
Respuesta
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A There will be no change to either species.
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B Species X numbers will decrease, species Y will remain constant.
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C Species Y numbers will decrease, species X will remain constant.
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D Both species numbers will increase.
Pregunta 6
Pregunta
Three human activities are listed.
1 burning fossil fuels
2 deforestation
3 overusing fertilisers
Which activities can cause the change shown in the graph?
Image:
Q41 (binary/octet-stream)
Respuesta
-
A 1, 2 and 3
-
B 1 and 2 only
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C 1 only
-
D 2 and 3 only
Pregunta 7
Pregunta
What is reduced after deforestation?
Respuesta
-
A force of rain hitting the ground
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B rainwater run-off
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C soil erosion
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D soil fertility
Pregunta 8
Pregunta
The diagram shows four positions on a river where water samples were taken.
Which graph shows oxygen concentrations in the river?
Image:
Q8 (binary/octet-stream)
Respuesta
-
AImage:Q8 A (binary/octet-stream)
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BImage:Q8 B (binary/octet-stream)
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CImage:Q8 C (binary/octet-stream)
-
DImage:Q8 D (binary/octet-stream)
Pregunta 9
Pregunta
A large amount of herbicide is applied to a field. Heavy rainfall carries much of it into a nearby lake.
What will be the effect of this on the lake?
Respuesta
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A Herbicide decreases the growth of water plants.
-
B Herbicide decreases the number of bacteria.
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C Herbicide increases the rate of evaporation from the lake.
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D Herbicide kills the fish.
Pregunta 10
Pregunta
The table shows the amount of carbon dioxide in the atmosphere in three different years.
What is the most likely cause of this change?
Image:
Q38 (binary/octet-stream)
Respuesta
-
A destruction of rainforests
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B increased use of fertilisers containing nitrogen
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C pollution of air by sulfur dioxide
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D rise in the sea level
Pregunta 11
Pregunta
Which two gases both contribute to global warming?
Respuesta
-
A carbon dioxide and methane
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B methane and oxygen
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C oxygen and sulfur dioxide
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D sulfur dioxide and carbon dioxide
Pregunta 12
Pregunta
Over-use of fertilisers on farmland causes the chemicals in the fertilisers to be washed into ponds and lakes.
This causes eutrophication resulting in the following events.
1 algae grow
2 fish die
3 bacteria grow
4 oxygen decreases
What is the correct sequence of these events?
Respuesta
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A 1 → 3 → 4 → 2
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B 1 → 4 → 3 → 2
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C 3 → 4 → 2 → 1
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D 4 → 1 → 2 → 3
Pregunta 13
Pregunta
The concentration of a pesticide in the tissues of the organisms in the following food chain was measured.
Which bar on the chart represents the large fish?
Image:
Q13 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 14
Pregunta
The diagram shows how sewage is treated.
Why is air bubbled through the aeration tank?
Image:
Q1 (binary/octet-stream)
Respuesta
-
A to encourage microorganisms to reproduce quickly
-
B to float the sludge
-
C to settle the sludge
-
D to stop microorganisms from reproducing too quickly
Pregunta 15
Pregunta
Three human activities are listed.
1 burning fossil fuels
2 deforestation
3 overusing fertilisers
Which activities can cause the change shown in the graph?
Image:
Q2 (binary/octet-stream)
Respuesta
-
A 1, 2 and 3
-
B 1 and 2 only
-
C 1 only
-
D 2 and 3 only
Pregunta 16
Pregunta
What is a reason for conserving plant species?
Respuesta
-
A to absorb oxygen from the air
-
B to decrease rainfall
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C to obtain drugs for medicinal use
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D to release carbon dioxide into the air
Pregunta 17
Pregunta
What is reduced after deforestation?
Respuesta
-
A force of rain hitting the ground
-
B rainwater run-off
-
C soil erosion
-
D soil fertility
Pregunta 18
Pregunta
The diagram shows four positions on a river where water samples were taken.
Which graph shows oxygen concentrations in the river?
Image:
Q19 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 19
Pregunta
Which process may result in eutrophication in a lake?
Respuesta
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A bleach entering from a factory
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B fertilisers entering from farmland
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C hot water entering from a power station
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D pesticides entering from farmland
Pregunta 20
Pregunta
Which two gases are the biggest contributors to the greenhouse effect?
Respuesta
-
A carbon dioxide and methane
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B carbon monoxide and carbon dioxide
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C methane and sulfur dioxide
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D sulfur dioxide and carbon monoxide
Pregunta 21
Pregunta
Untreated sewage is released into a river at point X.
Which graph correctly shows changes in oxygen concentration of the water as the river flows away from X?
Image:
Q21 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 22
Pregunta
What changes in combustion and deforestation increase carbon dioxide in the atmosphere?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 23
Pregunta
What is the principal source of energy input into a biological system?
Respuesta
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A consumer
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B decomposer
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C producer
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D Sun
Pregunta 24
Pregunta
Some of the stages of eutrophication are listed.
1 death of organisms requiring dissolved oxygen in water
2 increased availability of nitrate and other ions
3 increased decomposition after death of producers
4 reduction in dissolved oxygen
What is the correct order of these stages in eutrophication?
Respuesta
-
A 2 → 1 → 4 → 3
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B 2 → 3 → 4 → 1
-
C 3 → 2 → 4 → 1
-
D 3 → 4 → 1 → 2
Pregunta 25
Pregunta
The list shows changes that occur in a lake which is polluted by nitrogen-containing fertiliser.
1 decomposers feed on plants
2 growth of algae increases on the lake’s surface
3 oxygen levels decrease in the lake
4 underwater plants die
In which order do these changes occur?
Respuesta
-
A 2 → 4 → 1 → 3
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B 2 → 3 → 4 → 1
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C 3 → 4 → 2 → 1
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D 3 → 4 → 1 → 2
Pregunta 26
Pregunta
The bloodworm is an organism that is found in heavily polluted water.
The diagram shows where raw sewage flows into a river.
Where would there be fewest bloodworms?
Image:
Q26 (binary/octet-stream)
Respuesta
-
A
-
B
-
C
-
D
Pregunta 27
Respuesta
-
A
-
B
-
C
-
D
Pregunta 28
Pregunta
Large areas of tropical forests have been cleared to grow monocultures of palm oil plants.
Which effect will this have on the ecosystem?
Respuesta
-
A The use of fossil fuels in the area will decrease.
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B The use of pesticides in the area will decrease.
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C The variety of species in the area will decrease.
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D The variety of species in the area will increase.
Pregunta 29
Pregunta
What is not a reason for using chemical fertilisers in food production?
Respuesta
-
A improving growth rate
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B improving mineral content of the soil
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C increasing yields
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D reducing competition with weeds
Pregunta 30
Pregunta
The diagram shows how sewage is treated.
Why is air bubbled through the aeration tank?
Image:
Q30 (binary/octet-stream)
Respuesta
-
A to encourage microorganisms to reproduce quickly
-
B to float the sludge
-
C to settle the sludge
-
D to stop microorganisms from reproducing too quickly
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