A plant leaf contains various structures that makes it adapted for the process of photosynthesis.
Complete the following by drawing lines to connect each listed structure with the correct adaptation.
Structure | Â | Adaptation |
 |  |  |
Waxy cuticle | Â | Allows gas exchange to occur |
 |  |  |
Stomata |
 | Tightly packed with chloroplasts for maximum absorption of light |
 |  |  |
Palisade mesophyll | Â | Protect the leaf from water loss |
 |  |  |
Spongy mesophyll |
 | Increases the surface area to volume ratio for the diffusion of gases |
Fig. 1 shows the cross section of a leaf.
Fig. 1
Structure Y represents a vascular bundle.
Identify two types of tissue found in structure Y.
[2]
Describe the function of each type of tissue identified at part (i).
[2]
Layer X and Z in Fig. 1 form the outer boundaries of the leaf.
State one visible difference between layer X and Z.
[1]
The cells in layer X are transparent.
Explain the importance of this to the plant.
[2]
Carbon dioxide must enter the chloroplasts within plant cells for photosynthesis to occur.
Describe the movement of carbon dioxide from the atmosphere into the chloroplasts.
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