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2 marksNutrition in Living Organisms

CSEC Biology · May/June 2005 · Paper 2 · Question 1(d)(iii)

Students observe two varieties of a plant species, one with green leaves and one with red leaves. They hypothesize that the green variety photosynthesizes more efficiently and plan an investigation.

State TWO environmental factors that affect the rate of photosynthesis.

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Other parts of this question

  1. 1(a)(i)In the space provided below, construct a pie chart to show the relative proportions of the organisms the students found occupying the habitat.[4 marks]
  2. 1(a)(ii)What is the advantage of using a pie chart to represent the data in Table 1?[2 marks]
  3. 1(a)(iii)Identify another means besides a table and pie chart to represent the data in Table 1.[1 mark]
  4. 1(a)(iv)Identify TWO carnivores from the data contained in Table 1 and the pie chart.[2 marks]
  5. 1(b)(i)From the organisms the students find in the habitat, identify a food chain with at least FOUR organisms.[2 marks]
  6. 1(b)(ii)Suggest TWO long-term effects on the habitat, if a pair of flycatchers (insect-eating birds) suddenly enter the habitat under study.[2 marks]
  7. 1(c)(i)Identify TWO features shown in the drawings that can be used to classify the specimens.[2 marks]
  8. 1(c)(ii)In the space provided below, accurately draw Specimen B twice the size shown in Figure 2. State the magnification of your drawing.[4 marks]
  9. 1(d)(i)Based on the students' observation, suggest a hypothesis for the investigation.[2 marks]
  10. 1(d)(ii)Describe the investigation you would undertake to test the hypothesis you suggested in (d)(i). Include in your description the apparatus, materials and method…[4 marks]
  11. 1(d)(iv)Write an equation to adequately represent the processes involved in photosynthesis.[3 marks]

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