(a) ldentify each of specimens N, O, P and Q. (4 marks)

(b) Determine the plant population per hectare, if one seed of specimens N is sown per hole at a spacing of 60cm x 25cm. (4 marks)

(c) State two reasons for the inclusion of the plant from which specimen N is obtained in crop rotation. (2 marks)

(d) Mention three uses of specimen P. (3 marks)

(e) State two ways by which the activities of specimen Q affect crops (2 marks)