This KS3 biology worksheet can be used as a teaching resource to summarise the process of photosynthesis at key stage 3 or as a reminder activity at key stage 4.
There are four short tasks:
- unscrambling anagrams of key words relating to photosynthesis, such as sunlight, glucose and carbon dioxide
- filling in gapped key words in a cloze activity
- labelling a diagram of a leaf to show the reactants and products of photosynthesis
- answering a set of questions about the function of chlorophyll and the chemical reactions (as a word equation) involved in photosynthesis.
The answers are included.
For KS3 teaching resources on plant cells and their adaptations, see our Cells collection.
The answers to the cloze activity:
1) All living things need energy. Animals eat plants or other animals but plants feed in a different way.
2) Green plants can make their own food so we call them producers. They make their own food by the process of photosynthesis.
3) To make their own food plants need to absorb light energy to make glucose from water and carbon dioxide. During this process, a waste gas is also produced that is very useful to plants and animals for respiration. This is called oxygen.
4) It is in the leaves that most photosynthesis takes place. This is because there are lots of chloroplasts here that contain chlorophyll. This is the chemical that makes the plant green. This chemical traps energy from the sun for photosynthesis.
5) The word equation for photosynthesis is:
carbon dioxide + water > glucose + oxygen
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