Jamb Agricultural Science 2015 Past Questions and Answers

Question 11:

• JAMB 2015

If T represents the gene for tallness while t represents dwarfness

The genotypic ratio of the second filial generation will be

A. 3 : 1
B. 1 : 2 : 1
C. 2 : 2
D. 4 : 0

Question 12:

• JAMB 2015

The forest management system which involves the planting of both food crops and forest trees on the same piece of land at the same time is known as

A. Selective exploitation
B. Taungya
C. Slips
D. Cuttings

Question 13:

• JAMB 2015

If T represents the gene for tallness while t represents dwarfness

When a tall (TT) crop is crossed with a dwarf (tt) crop, the resultant crops will be

A. 100% dwarf
B. 100% tall
C. 50% tall and 50% dwarf
D. 75% tall and 25% dwarf.

Question 14:

• JAMB 2015

The instrument which enables a surveyor to find the direction of a base line is

A. Abney level
B. Ranging pole
C. Plumb bob
D. Magnetic compass

Question 15:

• JAMB 2015

In crop production, ginger is propagated by

A. Seeds
B. Bulbs
C. Rhizome
D. Corn