(a) In an incubator, 1,500 eggs were arranged on the trays for incubation. During candling, 25 eggs were discovered to be unfertilized. At hatching, 475 chi...

(a) In an incubator, 1,500 eggs were arranged on the trays for incubation. During candling, 25 eggs were discovered to be unfertilized. At hatching, 475 chicks were male and the remaining were female. Calculate the percentage of:
(i) unfertilized eggs;
(ii) fertilized eggs;
(iii) male chicks;
(iv) female chicks. [ 6 marks]

(b) State four signs that indicate the approach of parturition in a cow. [ 4 marks ]

(c) Mention four vegetative materials that could be used in propagating ornamental
plants. [ 4 marks ]

(d) State four advantages of grafting. [ 4 marks ]