The diagram below shows a cross-sectional view of the boundary between two adjacent plant cells.
Identify the structures labelled B - E. Structure A has been identified for you.
Label | Structure |
A | plasma membrane |
B | |
C | |
D | |
E |
State the functions of the structures labelled B and C in the diagram at part (a).
The image below shows a transmission electron micrograph of most of a single plant cell.
The cell was taken from a leaf.
Identify structure X.
(1)
Object Y is known as an artefact, which is an error in the preparation of the specimen of an electron micrograph, showing something that is not really there.
Use your knowledge of plant cell structure to identify the plant cell organelle that object Y could most easily be mistaken for.
Explain your answer.
(2)
Cellulose plays a vital role in supporting a plant and keeping it upright.
Identify from the list I - IV, two other compounds that play an important role in strengthening plant tissues.
- collagen
- amylopectin
- lignin
- water
☐ | A | II and III | |
☐ | B | III only | |
☐ | C | I and IV | |
☐ | D | III and IV |
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