Question 151:

• JAMB 2013

A serious pest of sweet potato whose larvae

destroy the foliage is

A. Leaf miners
B. Weevils mea
C. Mealy bugs
D. Aphids.

Question 152:

• JAMB 2013

The fertility of soils under forest is sustained
mainly by

A. Nutrient recycling
B. Rodent activities
C. Being protected from direct rays of the sun
D. Preventing raindrops from directly hitting the soil.

Question 153:

• JAMB 2013

The Mendelian law of segregation states that
the characteristics which is hidden in an F1,
reappears in F2 generation in a ratio

A. 1 : 2
B. 2 : 2
C. 1 : 3
D. 3 : 2

Question 154:

• JAMB 2013

The breed of sheep that can be found
throughout Nigeria is

A. Yankasa
B. Uda
C. West Africa dwarf sheep
D. Balami.

Question 155:

• JAMB 2013

A female cattle which has not had a calf or
developed into the mature form of a cow is
referred to as

A. Stag
B. Vealers
C. Yealing
D. Heifer