O-LevelBiologyPlant Nutrition5090/11 · May/June 2020 · Q61 Mark

The diagram shows a green plant photosynthesising under a glass jar. This was used as a control experiment in a laboratory investigation. [Figure 6.1]. Which diagram shows the experiment carried out to investigate the need for carbon dioxide in photosynthesis?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Agreen plant in light with sodium hydroxide solution to absorb carbon dioxide

Bgreen plant in dark with hydrogencarbonate indicator

Cgreen plant in light with hydrogencarbonate indicator to detect carbon dioxide

Dgreen plant in light with oil layer on water

✓ Correct answer

A: green plant in light with sodium hydroxide solution to absorb carbon dioxide

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Topic: Plant Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2020 Paper 1 Variant 1, question 6.

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