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Photosynthesis and Energy Flow · CSEC Human and Social Biology

46 past-paper questions on Photosynthesis and Energy Flow, part of Section A: Living Organisms and the Environment, from every CSEC Human and Social Biology paper on Quelpr.

Practise Photosynthesis and Energy Flow
  1. 2(a)(i)1 mark· CSEC Human and Social Biology · 2021 · Paper 2State what the arrows labelled A represent in Figure 1.
  2. 2(a)(ii)1 mark· CSEC Human and Social Biology · 2021 · Paper 2State what process is occurring at the arrow labelled B in Figure 1.
  3. 2(a)(iii)2 marks· CSEC Human and Social Biology · 2021 · Paper 2Identify which organism is the primary consumer and which organism is the producer in the food chain shown.
  4. 2(b)(i)5 marks· CSEC Human and Social Biology · 2021 · Paper 2Construct a food chain representing the information in the scenario.
  5. 2(b)(ii)2 marks· CSEC Human and Social Biology · 2021 · Paper 2Name TWO types of organisms that would be responsible for decomposing the dead garden snake.
  6. 2(b)(iii)3 marks· CSEC Human and Social Biology · 2021 · Paper 2Explain how burying the dead snake near the roots of the Croton plant would be beneficial to the plant.
  7. 2(b)(iv)1 mark· CSEC Human and Social Biology · 2021 · Paper 2State whether or not Stacy would have the same number of snakes in her yard as frogs.
  8. 8(b)(iii)4 marks· CSEC Human and Social Biology · January 2008 · Paper 2Explain the process by which green plants produce oxygen.
  9. 9(c)2 marks· CSEC Human and Social Biology · January 2008 · Paper 2Suggest TWO human activities responsible for increasing atmospheric carbon dioxide levels.
  10. 12(a)(i)1 mark· CSEC Human and Social Biology · January 2008 · Paper 2Identify which trophic position in a food chain (beginning, middle, or end) possesses the greatest amount of energy.
  11. 12(a)(ii)1 mark· CSEC Human and Social Biology · January 2008 · Paper 2Identify at which point in a food chain photosynthesis takes place.
  12. 12(a)(iii)3 marks· CSEC Human and Social Biology · January 2008 · Paper 2Construct a food chain showing the correct sequence among: big fish, water weed, small fish, and tadpole.
  13. 12(b)(i)6 marks· CSEC Human and Social Biology · January 2008 · Paper 2Explain how weedicide accumulated to toxic levels in humans by analyzing its concentration across each trophic level of the marine food chain.
  14. 12(b)(ii)6 marks· CSEC Human and Social Biology · January 2008 · Paper 2Explain how the physical removal of seaweed caused the collapse of marine life and death of local coral reefs.
  15. 1(a)3 marks· CSEC Human and Social Biology · January 2009 · Paper 2Construct a food chain consisting of four organisms, where at least one organism is a dolphin or a shark.
  16. 1(b)4 marks· CSEC Human and Social Biology · January 2009 · Paper 2Using knowledge of food chains, explain how a permanent ban on fishing whales, dolphins, and sharks would impact the ecosystem.
  17. 1(c)(i)1 mark· CSEC Human and Social Biology · January 2009 · Paper 2Define the term 'Carnivore'.
  18. 1(c)(ii)1 mark· CSEC Human and Social Biology · January 2009 · Paper 2Define the term 'Herbivore'.
  19. 1(c)(iii)1 mark· CSEC Human and Social Biology · January 2009 · Paper 2Define the term 'Omnivore'.
  20. 2(a)(i)3 marks· CSEC Human and Social Biology · January 2010 · Paper 2Complete the word equation for photosynthesis: [blank] + [blank] --(light / chlorophyll)--> sugar + [blank].
  21. 2(a)(ii)1 mark· CSEC Human and Social Biology · January 2010 · Paper 2In what form, starch or glycogen, is sugar stored in plants?
  22. 2(c)2 marks· CSEC Human and Social Biology · January 2010 · Paper 2Suggest TWO ways by which human beings return carbon dioxide to the atmosphere.
  23. 14(a)(i)3 marks· CSEC Human and Social Biology · January 2010 · Paper 2Define EACH of the following terms: Herbivore, Carnivore, Omnivore.
  24. 14(a)(ii)2 marks· CSEC Human and Social Biology · January 2010 · Paper 2What is meant by the term 'primary producer'?
  25. 14(b)3 marks· CSEC Human and Social Biology · January 2010 · Paper 2Construct a food chain consisting of the following organisms: mountain chicken, cricket, humans, grass, and lizard.
  26. 14(c)(i)6 marks· CSEC Human and Social Biology · January 2010 · Paper 2Discuss the adverse effects of insecticides on the environment, providing THREE distinct points.
  27. 14(c)(ii)6 marks· CSEC Human and Social Biology · January 2010 · Paper 2Farmers decide to use biological control using a wasp to kill citrus bugs. Suggest ONE advantage of this biological control method and TWO possible effects on the food chain.
  28. 2(a)4 marks· CSEC Human and Social Biology · January 2017 · Paper 2Complete the concept map by stating the correct labels for (i), (ii), (iii), and (iv).
  29. 2(b)(i)1 mark· CSEC Human and Social Biology · January 2017 · Paper 2Identify the stage in the cycle at which carbon dioxide enters the food chain.
  30. 2(b)(ii)1 mark· CSEC Human and Social Biology · January 2017 · Paper 2Identify the stage in the carbon cycle where human activities have a major effect.
  31. 2(c)(i)2 marks· CSEC Human and Social Biology · January 2017 · Paper 2State two reasons why plants require adequate amounts of nitrogen.
  32. 2(c)(ii)2 marks· CSEC Human and Social Biology · January 2017 · Paper 2Name two types of soil bacteria that provide nitrogen.
  33. 1(a)(i)2 marks· CSEC Human and Social Biology · May/June 2009 · Paper 2From the given list (respiration, digestion, osmosis, photosynthesis), identify the processes at I and II in Figure 1 and write the answers in the spaces provided.
  34. 7(c)(i)3 marks· CSEC Human and Social Biology · May/June 2009 · Paper 2Complete the sentences describing Figure 3 using words from the list: heat, light, CO2, radiation.
  35. 7(c)(ii)2 marks· CSEC Human and Social Biology · May/June 2009 · Paper 2Suggest TWO possible effects of global warming.
  36. 2(a)(i)2 marks· CSEC Human and Social Biology · May/June 2012 · Paper 2Construct an aquatic food chain using three organisms found on reefs.
  37. 2(a)(ii)1 mark· CSEC Human and Social Biology · May/June 2012 · Paper 2Identify a herbivore from the constructed food chain in (a)(i).
  38. 2(a)(iii)1 mark· CSEC Human and Social Biology · May/June 2012 · Paper 2State which trophic level of a food chain (first, second or third) has the HIGHEST number of species.
  39. 2(a)(iv)4 marks· CSEC Human and Social Biology · May/June 2012 · Paper 2Account for the differences in available energy at the different trophic levels of the food chain.
  40. 2(c)5 marks· CSEC Human and Social Biology · May/June 2012 · Paper 2Provide the equation for photosynthesis, and using the information in Figure 4, explain why getting rid of all trees, plants, and grass everywhere is not a good idea.
  41. 2(b)3 marks· CSEC Human and Social Biology · May/June 2015 · Paper 2Name TWO raw materials required for photosynthesis and ONE product of photosynthesis.
  42. 2(c)4 marks· CSEC Human and Social Biology · May/June 2015 · Paper 2State the expected results of testing the variegated leaf with iodine and explain your answer.
  43. 2(d)(i)2 marks· CSEC Human and Social Biology · May/June 2015 · Paper 2Identify the group of organisms possessing the greatest biomass in the food web and state the role they perform.
  44. 2(d)(ii)2 marks· CSEC Human and Social Biology · May/June 2015 · Paper 2Explain why each successive trophic level contains less energy than the one before it.
  45. 2(d)(iii)1 mark· CSEC Human and Social Biology · May/June 2015 · Paper 2Suggest ONE consequence on the food web if parrots were removed.
  46. 3(a)(ii)2 marks· CSEC Human and Social Biology · May/June 2015 · Paper 2Name TWO greenhouse gases that contribute to global warming.

Related topics in Section A: Living Organisms and the Environment