Characteristics, Classification & Features of Organisms (CIE IGCSE Biology: Co-ordinated Sciences (Double Award))

All living organisms show the same seven characteristics. These are listed below, along with their definitions. 

Match the characteristics and definitions by drawing lines between them on the diagram below. One has been done for you.

A student investigated plant sensitivity to light by measuring their growth rate at different light intensities

Table 1 shows their results. 

Table 1

light intensity / arbitrary units	growth of plants / cm			mean growth / cm
10	3.2	3.3	3.1	3.2
20	4.8	4.5	4.5
30	5.3	5.5	5.2	5.3
40	6.4	6.3	6.6	6.4

Calculate the mean growth of the plants at a light intensity of 20 arbitrary units.