A plan diagram is made of a transverse section of a leaf.
Which features should be seen in the diagram?
1 the overall distribution of tissues
2 the relative thicknesses of the tissue layers
3 those cells which contain chloroplasts
1 and 2 only
2 )
1 and 3 only
3 )
2 and 3 only
4 )
1, 2 and 3