Jamb Agricultural Science Past Questions For Year 2020
Question 71
The most active agent of physical weathering in arid regions is
- A. wind
- B. water
- C. temperature
- D. ice
Question 72
Plant breeders aim at obtaining the following except
- A. tolerance to climatic extremes
- B. resistance to pests
- C. adaptation of pollination
- D. uniformity in the time of maturity
Question 73
Which of the following is not a characteristic of a good pasture?
- A. high quality grass
- B. provision of balance nutrients
- C. ability to withstand trampling
- D. high stem to leaf ratio
Question 74
Which of the following factors usually affects the colour of egg yolk?
- A. age of the laying hen
- B. type of housing
- C. type of feed
- D. colour of the cock
Question 75
The mating of a white fulani bull and an N'dama cow could be termed?
- A. Inbreeding
- B. Line breeding
- C. Outbreeding
- D. Cross breeding
