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GCSE Biology > Photosynthesis > Flashcards

Photosynthesis Flashcards

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1
Q

Describe an experiment to show whether photosynthesis is taking place in a leaf. [4]

A

Boil the leaf in water (stops chemical reactions)
Boil in ethanol, with a hot water bath (removes chlorophyll)
Add iodine solution.
If photosynthesis is taking place, starch will be present, so it will turn from yellow to blue/black

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2
Q

What are the three limiting factors of photosynthesis?

A

Light intensity
Carbon dioxide concentration
Temperature

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3
Q

Why is sunlight needed for photosynthesis?

A

Absorbed by the cholorphyll, which uses the sunlight for energy.

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GCSE Biology (19 decks)

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