U.C.E BIOLOGY 1998 PAPER 1 QN 34

Figure 6 below shows the nitrogen cycle.

a) Name the processes taking place at A, B, C, D and E.

A ……………………………………………………………………………………………….

B ……………………………………………………………………………………………….

C ……………………………………………………………………………………………….

D ………………………………………………………………………………………………

E ………………………………………………………………………………………………

b) (i) How is the process at B useful to plants?

(ii) What organisms are responsible for the process at C?

c) State the importance of the process at A in the cycle.

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