The diagram below illustrates the reproductive parts of livestock. Study it carefully and answer the questions that follow. (a) Name the parts labelled I, I...

The diagram below illustrates the reproductive parts of livestock. Study it carefully and answer the questions that follow.

(a)  Name the parts labelled I, II, III, IV, V and VI.                      

(b)  State one function of each of the parts labelled I, II, III, IV, V and VI.                      

(c)  To prevent indiscriminate mating in the herd, a farmer decided to carry out a management practice to alter the functioning of the parts illustrated above.

(i)  Name the management practice.                                      
(ii) Name the two main parts of the illustrated diagram that would be of utmost benefit to the farmer in carrying out the management practice named in  (c)(i).