Mock test. 1 hour and 45 minutes. 90 marks available.
Each time the test is taken it will present different questions.
GCSE OCR Biology A Papers 2 and 4
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#1. Which type of factor is soil composition?
#2. Decomposers break down dead animal and plant material - what happens to the carbon inside the dead organisms?
#3. When fossil fuels are burned they release carbon into the atmosphere - which of the following are fossil fuels?
#4. How can we increase the accuracy of abundance estimates?
#5. Nitrogen is often found in a particular form in the soil what is this form?
#6. How much of the atmosphere is composed of nitrogen?
#7. Match the description to the correct term. All of the organisms that live in a particular pond.
#8. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?
#9. How does nitrogen in plants get into the soil?
#10. Is the following statement accurate: nitrogen be can be moved back and forth from the atmosphere and into the soil by bacteria.
#11. Why is the binomial naming system useful for scientists?
#12. Where are nitrogen-fixing bacteria found in plants such as peas and beans?
#13. The binomial name for tigers is Felis tigris. Which part of the name represents the genus?
#14. What does abundance measure?
#15. By which process does water in the atmosphere become part of clouds?
#16. Name two resources that both animals and plants need to survive and reproduce? ? structure your answer like this: ..... and .....
#17. 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?
#18. Why do plants need nitrogen?
#19. By which process does water in the clouds move onto land?
#20. Which type of factor is parasitism?
#21. Finish the sentence: Nitrogen compounds found in artificial fertilisers are ......... and dissolve in the soil's water.
#22. By which process does water in the oceans and lakes move into the atmosphere?
#23. Which type of factor is pollution?
#24. Why do we use systematic or random sampling of an area to determine the distribution or abundance of organisms?
#25. Which term do we use to describe the relationships between species that depend on each other for resources?
#26. What do we mean by the distribution of organisms?
#27. Producers are organisms which do what?
#28. Which of these is a community?
#29. What do we call animals that eat both other animals and plants?
#30. Which of these substances is sometimes added to water to make it potable?
#31. True or false - plants remove carbon from the atmosphere during photosynthesis
#32. What are abiotic factors?
#33. We sometimes use a transect to perform systematic sampling. This involves which of the following?
#34. 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?
#35. In a scientific investigation, you and two others randomly sample a rocky shore using quadrats. You find that on average there are 2 crabs per quadrat and the whole shore would be covered by 150 quadrats. Estimate how many crabs are on the whole shore.
#36. True or false - carbon dioxide is removed from the atmosphere as it dissolves in the oceans?
#37. Which of the following is the correct word equation for aerobic respiration?
#38. Which of the following are strategies organisms use to adapt to changing abiotic conditions?
Select all that apply:
#39. How do most plants get their nitrogen?
#40. What is potable water?
#41. Match the description to the correct term. All of the individuals of a species that live in a particular woodland.
#42. Which of the following can we use to investigate the effect of abiotic factors on the distribution of organisms?
#43. Tapeworms and ticks are examples of parasites - which of these lives inside another organism?
#44. What groups of organisms belong to the domain - eukaryotes? ? Eukaryotes have a membrane bound nucleus
Select all that apply:
#45. What do we call the process by which farmers change the crops they grow each year to maintain nitrogen in the soil?
#46. What is groundwater?
#47. True or false - volcanism removes carbon from the atmosphere
#48. The 5 kingdoms of life are Animals, Plants, Fungi, Protists and Prokaryotes. Which kingdom do algae belong to?
#49. What do we call animals that are eaten by other animals?
#50. Which of the following organisms belong to the kingdom - animals?
Select all that apply:
#51. What are biotic factors?
#52. What are nitrogen-fixing bacteria?
#53. Which of the following is the source of oil and gas?
#54. What is the correct order of groups in the Linnaean Classification system?
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#55. What is a parasite?
#56. In typical feeding relationships there are two elements - what are they?
#57. How can parasites affect the nutrition of their hosts?
#58. 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
#59. Where does the water in lakes and rivers end up?
#60. What are the three domains?
#61. Which type of factor is nutrient availability?
#62. Which square instrument do we use for randomly sampling population sizes?
#63. Why do plants need oxygen?
#64. Which type of factor is predation?
#65. Which type of factor is air temperature?
#66. In mutualistic feeding relationships - which organisms benefit?
#67. Respiration from animals is a source of carbon dioxide in the atmosphere - do plants also use respiration?
#68. Which type of factor is water availability?
#69. 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
#70. Predators are essential for healthy ecosystems - what happens if predators are removed due to extinction?
#71. What natural source of nitrogen is sometimes added to fields by farmers?
#72. The water cycle has one part where water is in solid form - what is that form of storage?
#73. Which of these is a habitat?
#74. Who invented the binomial naming system?
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#75. Why can humans only survive a few days without water?
#76. Is the following statement accurate? Lightning can cause atmospheric nitrogen to be released into the rain and be washed into the soil?
#77. What is the binomial name for humans?
#78. Which are the two kinds of sampling we normally use?
Select all that apply:
#79. Which type of factor is competition?
#80. Complete the equation used to calculate population size: population size = .............. x total size of it habitat / total area of quadrats
#81. Which of the following plants have a mutualistic relationship with nitrogen-fixing bacteria?
Select all that apply:
#82. Which of these is an ecosystem?
#83. What do we call animals that only eat plants?
#84. In parasitic feeding relationships there are two elements - what are they?
#85. Which organisms maintain the nitrogen levels in the soil?
#86. Which type of factor is disease?
#87. Which of the following is the source of coal?
#88. Is this relationship parasitic or mutualistic? A crocodile which lets a small bird feed on leftover meat between its teeth
#89. Which of these processes allows saltwater to become potable?
#90. Which of these is a population?
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