Waec Agricultural Science 2015 Past Questions and Answers

Question 31:

• WAEC 2015

Callosobruchus maculatus is a common pest of

A. Sorghum
B. Rice
C. Mazie
D. Cowpea

Question 32:

• WAEC 2015

The use of pathogens to control dodder weeds is a

A. Physcial methos
B. Mechanical method
C. Biological method
D. Cultural method

Question 33:

• WAEC 2015

The digestive function of the rumen in ruminant nutrition is enchanced by the

A. Absorption of water
B. Presence of micro -organisms
C. Absorption of food nutrients
D. Retention of unwanted foreign materials

Question 34:

• WAEC 2015

The duration of the oestrus cycle of sow is

A. 14 - 28 days
B. 6 - 10 days
C. 3 - 5 days
D. 1 - 2 days

Question 35:

• WAEC 2015

Natural immunity to diseases in calves is acquired through maccess to

A. Vaccine
B. Colostrum
C. Balanced diet
D. Salt licks