Check each named cell type separately: all three possess a cell membrane, while cell walls occur in plant and prokaryotic cells but not animal cells.
The photograph shows two human cheek cells on a microscope slide. The mean diameter of human cheek cells is .
The photograph below shows part of a transverse section of a plant stem.
Three types of cell are labelled X, Y and Z.
Identify the cell types labelled X, Y and Z. X Y Z
The photograph shows a longitudinal section of where two plant cells meet.
State which of the cells labelled X, Y or Z is shown in this longitudinal section.
Cell