Mock test. 1 hour and 10 minutes. 60 marks available.
Each time the test is taken it will present different questions.
GCSE OCR Combined Science A Papers 2 and 8
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#1. True or false – volcanism removes carbon from the atmosphere
#2. 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?
#3. Which organisms maintain the nitrogen levels in the soil?
#4. By which process does water in the clouds move onto land?
#5. Which term do we use to describe the relationships between species that depend on each other for resources?
#6. Is this relationship parasitic or mutualistic? A crocodile which lets a small bird feed on leftover meat between its teeth
#7. Who invented the binomial naming system?
Uh oh, maybe you need some lessons!
#8. When fossil fuels are burned they release carbon into the atmosphere – which of the following are fossil fuels?
#9. By which process does water in the oceans and lakes move into the atmosphere?
#10. Is the following statement accurate? Lightning can cause atmospheric nitrogen to be released into the rain and be washed into the soil?
#11. In mutualistic feeding relationships – which organisms benefit?
#12. Which of the following organisms belong to the kingdom – animals?
Select all that apply:
#13. How does nitrogen in plants get into the soil?
#14. What do we call animals that are eaten by other animals?
#15. True or false – carbon dioxide is removed from the atmosphere as it dissolves in the oceans?
#16. Which of these substances is sometimes added to water to make it potable?
#17. Which are the two kinds of sampling we normally use?
Select all that apply:
#18. Which type of factor is disease?
#19. How can we increase the accuracy of abundance estimates?
#20. Tapeworms and ticks are examples of parasites – which of these lives inside another organism?
#21. What groups of organisms belong to the domain – eukaryotes? ? Eukaryotes have a membrane bound nucleus
Select all that apply:
#22. Which type of factor is competition?
#23. Which of these is an ecosystem?
#24. Match the description to the correct term. All of the individuals of a species that live in a particular woodland.
#25. If grass is eaten by a rabbit and a rabbit is eaten by a hawk. What level of consumer is the hawk?
#26. What do we mean by the distribution of organisms?
#27. Which of these is a community?
#28. How much of the atmosphere is composed of nitrogen?
#29. Why can humans only survive a few days without water?
#30. Predators are essential for healthy ecosystems – what happens if predators are removed due to extinction?
#31. What is a parasite?
#32. Nitrogen is often found in a particular form in the soil what is this form?
#33. Why do plants need oxygen?
#34. Which type of factor is air temperature?
#35. Decomposers break down dead animal and plant material – what happens to the carbon inside the dead organisms?
#36. Which of the following is the correct word equation for aerobic respiration?
#37. How can parasites affect the nutrition of their hosts?
#38. Respiration from animals is a source of carbon dioxide in the atmosphere – do plants also use respiration?
#39. Which type of factor is nutrient availability?
#40. What are abiotic factors?
#41. What is the correct order of groups in the Linnaean Classification system?
Remember:
King Prawn Curry is the Only Food that Gives Satisfaction
#42. Why do we use systematic or random sampling of an area to determine the distribution or abundance of organisms?
#43. 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.
#44. We sometimes use a transect to perform systematic sampling. This involves which of the following?
#45. By which process does water in the atmosphere become part of clouds?
#46. What are biotic factors?
#47. Match the description to the correct term. All of the organisms that live in a particular pond.
#48. True or false – plants remove carbon from the atmosphere during photosynthesis
#49. What is groundwater?
#50. In typical feeding relationships there are two elements – what are they?
#51. 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
#52. Which of the following is the source of coal?
#53. What do we call the process by which farmers change the crops they grow each year to maintain nitrogen in the soil?
#54. The binomial name for tigers is Felis tigris. Which part of the name represents the genus?
#55. What do we call animals that eat both other animals and plants?
#56. Which of the following are strategies organisms use to adapt to changing abiotic conditions?
Select all that apply: