The newest 9 of 9 written questions. Open one to see it on the real paper.
name role State the name of this pigment and its role in photosynthesis. (b) A green pigment is needed for photosynthesis.
See it on the paper →Identify the optimum temperature for photosynthesis shown in Fig. 2.2. °C
See it on the paper →Plants need chlorophyll for photosynthesis. Circle the mineral ion needed by plants for making chlorophyll. magnesium potassium sodium zinc calcium (ii)
See it on the paper →Plants need chlorophyll for photosynthesis. Circle the mineral ion needed by plants for making chlorophyll. magnesium potassium sodium zinc calcium (ii)
See it on the paper →Name the mineral ion that the mistletoe must absorb to make chlorophyll.
See it on the paper →Chlorophyll is a green pigment. Suggest a reason for the appearance of plant C.
See it on the paper →State the function of magnesium ions in plants.
See it on the paper →Describe the effect of a deficiency in magnesium ions in plants.
See it on the paper →State why plants need magnesium ions.
See it on the paper →Most candidates knew that the green pigment is chlorophyll, and some gained additional credit for describing its role. A few candidates gave sufficient detail for full credit.
— Examiner report, May/June 2025, 0653/43 Q2(b) (Cambridge)
Most candidates answered this question correctly, stating that magnesium ions are needed for making chlorophyll. Answers which did not gain credit were nitrate, water and glucose.
— Examiner report, October/November 2020, 0653/43 Q7(a)(ii) (Cambridge)
Most candidates were able to recall the information that magnesium is needed for chlorophyll production.
— Examiner report, October/November 2020, 0653/63 Q1(c) (Cambridge)
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