Figure 1 shows a cross section of a leaf.
Figure 1
Which of the options below correctly describes the organisational structure of a leaf?
Cell
Tissue
Organ
Organ system
Name structure X and Y in Figure 1.
Describe how structure X (in Figure 1) helps control gas exchange in response to changing environmental conditions.
Which feature of palisade mesophyll cells makes them adapted for efficient photosynthesis?
They are transparent to allow light to pass through.
They have a thick waxy coating.
Contain lots of mitochondria
Contain lots of chloroplasts
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