OCR Combined Science A Papers 2 and 8 Automock

#1. By which process does water in the oceans and lakes move into the atmosphere?

precipitation

evaporation

sublimation

condensation

distillation

#2. Predators are essential for healthy ecosystems – what happens if predators are removed due to extinction?

Increases in biodiversity

Increases in overall biomass production in an ecosystem

Reductions in biodiversity

#3. In parasitic feeding relationships there are two elements – what are they?

parasite and host

Pest and controller

Predators and prey

#4. Which type of factor is parasitism?

Abiotic

Inbiotic

Sub-biotic

Biotic

#5. Why do plants need oxygen?

Plants also do aerobic respiration - to get energy from glucose

Plants need oxygen to process urea

Plants need oxygen to build their cell walls

#6. Why do plants need nitrogen?

They have compounds containing nitrogen in their DNA and in proteins

Nitrogen is a key ingredient in photosynthesis

Nitrogen is one of the ingredients in cellulose which makes up their cell walls

#7. Which of the following can we use to investigate the effect of abiotic factors on the distribution of organisms?

Counting every individual of an entire community within an ecosystem

Single quadrats, placed in separate ecosystems

A line or belt transect - sampling along a line (or around square) measuring both abundance and abiotic factors

#8. What groups of organisms belong to the domain – eukaryotes? ? Eukaryotes have a membrane bound nucleus

Select all that apply:

Protists

Fungi

Animals

Archaea

Bacteria

Plants

#9. What are nitrogen-fixing bacteria?

Bacteria that move nitrogen from the air into the soil

Bacteria that are eaten as a source of nitrogen

Bacteria that do not need any nitrogen to survive

#10. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?

#11. By which process does water in the atmosphere become part of clouds?

precipitation

sublimation

distillation

evaporation

condensation

#12. If grass is eaten by a rabbit and a rabbit is eaten by a hawk. What level of consumer is the hawk?

Primary consumer

Tertiary consumer

Secondary consumer

#13. Which of the following plants have a mutualistic relationship with nitrogen-fixing bacteria?

Select all that apply:

Potatoes

Peas

Beans

Tomatoes

#14. In typical feeding relationships there are two elements – what are they?

Pest and controller

Predators and prey

Legumes and native-action

#15. Match the description to the correct term. All of the organisms that live in a particular pond.

Habitat

Ecosystem

Community

Population

#16. Name two resources that both animals and plants need to survive and reproduce? ? structure your answer like this: ..... and .....

#17. What is the binomial name for humans?

#18. Which of these is an example of a mutualistic relationship? 1) An insect and a flower 2) A vampire bat and a cow 3) A tick and a dog

2

1

3

#19. How do we describe the periodic changes in population size of predators and prey – explained by increases in numbers of predators due to increased numbers of prey and then decreasing numbers of prey due to increasing numbers of predators and so on?

Competition-driven cyclic abundance shifts

Predator-Prey cycles

Abiotic-Biotic cycles

#20. True or false – volcanism removes carbon from the atmosphere

true

false

#21. Which of the following is the source of coal?

nuclear decay from millions of years ago

dead plankton from millions of years ago

dead and buried plant material from millions of years ago

#22. True or false – plants remove carbon from the atmosphere during photosynthesis

false

true

#23. Which of the following is the correct word equation for aerobic respiration?

carbon dioxide + oxygen = water + energy + glucose

nitrogen dioxide + carbon dioxide = water + energy

oxygen + glucose = carbon dioxide + water + energy

#24. The water cycle has one part where water is in solid form – what is that form of storage?

glaciers and icesheets

clouds

groundwater

oceans

#25. What do we call animals that are eaten by other animals?

Predators

Prey

#26. What is potable water?

you cannot drink it safely

you can drink it safely

you can put it in a pot

#27. Which square instrument do we use for randomly sampling population sizes?

#28. What does abundance measure?

The average number of different species within a community

The average size of organisms in a population

The number of individuals or frequency of occurrence in an area

#29. Which type of factor is pollution?

Biotic

Inbiotic

Abiotic

Sub-biotic

#30. Tapeworms and ticks are examples of parasites – which of these lives inside another organism?

Tapeworms

Ticks

Neither

#31. Which type of factor is predation?

Biotic

Sub-biotic

Inbiotic

Abiotic

#32. In mutualistic feeding relationships – which organisms benefit?

None of the organisms

Only one organism

Both organisms

#33. True or false – carbon dioxide is removed from the atmosphere as it dissolves in the oceans?

false

true

#34. Which of these is an ecosystem?

Includes all of the organisms that live in a particular environment

Includes all of the individuals of a particular species in an environment

Includes all of the organisms in a particular environment as well as the environment itself

Includes the local environment where an organism normally lives

#35. What are biotic factors?

Factors which affect the ability of scientists to sample the environment - leading to errors in measurements

Physical and chemical environmental factors which affect the distribution and abundance of organisms

Biological environmental factors which affect the distribution and abundance of organisms

#36. How do most plants get their nitrogen?

From the soil - absorbed through their roots

From the air - absorbed through their leaves

#37. How can we increase the accuracy of abundance estimates?

Use a different calculation

Take abundance estimates of different days throughout the year

Increase the number of quadrats

#38. What natural source of nitrogen is sometimes added to fields by farmers?

#39. Which type of factor is competition?

Inbiotic

Abiotic

Sub-biotic

Biotic

#40. What are the three domains?

Eurkarya, Fungi and Bacteria

Bacteria, Archaea, and Eukarya

Animals, Plants and Bacteria

#41. Producers are organisms which do what?

Eat other organisms that produce glucose

Make glucose through photosynthesis

#42. Which of the following are strategies organisms use to adapt to changing abiotic conditions?

Select all that apply:

Changing diet

Moving to new areas

Eating less food

#43. Finish the sentence: Nitrogen compounds found in artificial fertilisers are ……… and dissolve in the soil’s water.

potable

soluble

permeable

#44. Where does the water in lakes and rivers end up?

oceans

clouds

#45. What is a parasite?

An organism that releases toxic gases and scares its competitors away from meals

An organism that feeds on the same producers as another organism

An organism that feeds upon another without killing it

#46. Which of these is an example of a parasitic relationship? 1) An insect and a flower 2) A vampire bat and a cow 3) A coral polyp and single-celled algae

3

2

1

#47. How can parasites affect the nutrition of their hosts?

By poisoning the hosts until they perish

By making feeding more difficult for their hosts

By taking some of their nutrients for themselves - leaving less for the hosts

#48. What do we mean by the distribution of organisms?

The composition of species within a community

How many organisms there are in one quadrat

Where organisms are found

#49. What is the correct order of groups in the Linnaean Classification system?

Family Genus Species Phylum Kingdom Class Order

Kingdom Class Order Family Genus Species Phylum

Kingdom Phylum Class Order Family Genus Species

Remember:

King Prawn Curry is the Only Food that Gives Satisfaction

#50. Which are the two kinds of sampling we normally use?

Select all that apply:

Random

Complete

Chaotic

Systematic

#51. Which type of factor is disease?

Abiotic

Inbiotic

Sub-biotic

Biotic

#52. Respiration from animals is a source of carbon dioxide in the atmosphere – do plants also use respiration?

only carnivorous plants perform respiration

yes

no

#53. Decomposers break down dead animal and plant material – what happens to the carbon inside the dead organisms?

all of the carbon is released during respiration

part of the carbon is released during respiration and part is stored in the composers cells

all of the carbon becomes part of the decomposers

#54. By which process does water in the clouds move onto land?

evaporation

condensation

precipitation

sublimation

distillation

#55. What do we call animals that only eat plants?

#56. Why is the binomial naming system useful for scientists?

Makes scientists feel important

Most people speak latin

Clearly identifies individual species

#57. Which of these is a habitat?

Includes all of the individuals of a particular species in an environment

Includes all of the organisms that live in a particular environment

Includes the local environment where an organism normally lives

Includes all of the organisms in a particular environment as well as the environment itself

#58. Why do we use systematic or random sampling of an area to determine the distribution or abundance of organisms?

The samples must be collected at random to make sure the same part of an area is sampled at least twice

The samples must be representative of the whole area to avoid bias

Random sampling over and over again will eventually lead to samples of the entire area

#59. Is the following statement accurate: nitrogen be can be moved back and forth from the atmosphere and into the soil by bacteria.

No

Yes

#60. Sometimes it is not possible to measure the number of organisms in a transect, for example when measuring the distribution of plants. In this case we use an alternative measure called what?

Average size of organisms

Percentage cover

GCSE OCR Combined Science A Papers 2 and 8

Results

#1. By which process does water in the oceans and lakes move into the atmosphere?

#2. Predators are essential for healthy ecosystems – what happens if predators are removed due to extinction?

#3. In parasitic feeding relationships there are two elements – what are they?

#4. Which type of factor is parasitism?

#5. Why do plants need oxygen?

#6. Why do plants need nitrogen?

#7. Which of the following can we use to investigate the effect of abiotic factors on the distribution of organisms?

#8. What groups of organisms belong to the domain – eukaryotes? ? Eukaryotes have a membrane bound nucleus

#9. What are nitrogen-fixing bacteria?

#10. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?

#11. By which process does water in the atmosphere become part of clouds?

#12. If grass is eaten by a rabbit and a rabbit is eaten by a hawk. What level of consumer is the hawk?

#13. Which of the following plants have a mutualistic relationship with nitrogen-fixing bacteria?

#14. In typical feeding relationships there are two elements – what are they?

#15. Match the description to the correct term. All of the organisms that live in a particular pond.

#16. Name two resources that both animals and plants need to survive and reproduce? ? structure your answer like this: ..... and .....

#17. What is the binomial name for humans?

#18. Which of these is an example of a mutualistic relationship? 1) An insect and a flower 2) A vampire bat and a cow 3) A tick and a dog

#19. How do we describe the periodic changes in population size of predators and prey – explained by increases in numbers of predators due to increased numbers of prey and then decreasing numbers of prey due to increasing numbers of predators and so on?

#20. True or false – volcanism removes carbon from the atmosphere

#21. Which of the following is the source of coal?

#22. True or false – plants remove carbon from the atmosphere during photosynthesis

#23. Which of the following is the correct word equation for aerobic respiration?

#24. The water cycle has one part where water is in solid form – what is that form of storage?

#25. What do we call animals that are eaten by other animals?

#26. What is potable water?

#27. Which square instrument do we use for randomly sampling population sizes?

#28. What does abundance measure?

#29. Which type of factor is pollution?

#30. Tapeworms and ticks are examples of parasites – which of these lives inside another organism?

#31. Which type of factor is predation?

#32. In mutualistic feeding relationships – which organisms benefit?

#33. True or false – carbon dioxide is removed from the atmosphere as it dissolves in the oceans?

#34. Which of these is an ecosystem?

#35. What are biotic factors?

#36. How do most plants get their nitrogen?

#37. How can we increase the accuracy of abundance estimates?

#38. What natural source of nitrogen is sometimes added to fields by farmers?

#39. Which type of factor is competition?

#40. What are the three domains?

#41. Producers are organisms which do what?

#42. Which of the following are strategies organisms use to adapt to changing abiotic conditions?

#43. Finish the sentence: Nitrogen compounds found in artificial fertilisers are ……… and dissolve in the soil’s water.

#44. Where does the water in lakes and rivers end up?

#45. What is a parasite?

#46. Which of these is an example of a parasitic relationship? 1) An insect and a flower 2) A vampire bat and a cow 3) A coral polyp and single-celled algae

#47. How can parasites affect the nutrition of their hosts?

#48. What do we mean by the distribution of organisms?

#49. What is the correct order of groups in the Linnaean Classification system?

#50. Which are the two kinds of sampling we normally use?

#51. Which type of factor is disease?

#52. Respiration from animals is a source of carbon dioxide in the atmosphere – do plants also use respiration?

#53. Decomposers break down dead animal and plant material – what happens to the carbon inside the dead organisms?

#54. By which process does water in the clouds move onto land?

#55. What do we call animals that only eat plants?

#56. Why is the binomial naming system useful for scientists?

#57. Which of these is a habitat?

#58. Why do we use systematic or random sampling of an area to determine the distribution or abundance of organisms?

#59. Is the following statement accurate: nitrogen be can be moved back and forth from the atmosphere and into the soil by bacteria.

#60. Sometimes it is not possible to measure the number of organisms in a transect, for example when measuring the distribution of plants. In this case we use an alternative measure called what?

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