Biology · May / June 2020 · Paper 12 · Question 6
5090Photosynthesis
The diagram shows a green plant photosynthesising under a glass jar. This was used as a control experiment in a laboratory investigation. Which diagram shows the experiment carried out to investigate the need for carbon dioxide in photosynthesis?
- Ain light; airtight bung; glass jar; green plant; filter paper; sodium hydroxide solution to absorb carbon dioxide; water
- Bin dark; airtight bung; glass jar; green plant; hydrogencarbonate indicator to detect carbon dioxide; water
- Cin light; airtight bung; glass jar; green plant; hydrogencarbonate indicator to detect carbon dioxide; water
- Din light; airtight bung; glass jar; green plant; oil layer; water
As printed in the paper
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Correct answer: A. in light; airtight bung; glass jar; green plant; filter paper; sodium hydroxide solution to absorb carbon dioxide; water
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