1. Look at the diagram showing a plant cell.

(i) The diameter of the nucleus in the diagram is 10 millimetres. The actual size of the nucleus is 10 micrometres.

Calculate the magnification of the diagram.

Answer = ....................................... × [2]

(ii) Look at the picture of part of a plant cell.

Use the arrow (measuring 75 mm) on the picture and the scale (measuring 15 mm) to estimate the length of the chloroplast.

Answer = ....................................... μm [1]