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How Plants Feed

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Question 5
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Plants lose water through their leaves by transpiration. The loss of water from a potted geranium plant can be found by measuring its mass regularly. The histogram below shows how much water a plant loses over 24 hours.
Remember: 1 cm3  of water has a mass of 1 gramme.

Plant in pot



1. Why do you think that there is a plastic bag wrapped around the pot and the soil?

2. When did the plant lose the most water?

3. When did the plant lose the least water?

4. How can we explain these results?

5. What is the total amount of water lost by the plant in 24 hours?


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