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Green Plants
Activities
Design a Leaf
A leaf is made up of layers.
- Cut out the boxes below.
- Match up the description of the layer and its job.
- Arrange the layers in the order that they are found on the leaf to make a table.
- Make a key to label the layers in the diagram.
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Layer of leaf |
Description |
Function |
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spongy layer |
tall thin cells, tightly packed with a lot of chloroplasts which make the upper surface of the leaf dark green |
allows oxygen and carbon dioxide to diffuse in and out of the leaf |
|
upper epidermis |
thin, flat cells and guard cells surrounding stomata (pores) |
prevents moulds growing on the leaf surface and water vapour from escaping |
|
waxy cuticle |
rounded cells with air space in between and few chloroplasts |
most photosynthesis takes place here |
|
lower epidermis |
waterproof layer of wax which makes the leaf shiny |
oxygen and carbon dioxide can diffuse through the air spaces |
|
palisade layer |
thin flat cells |
protective upper layer |
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