Question 541:

• JAMB 1987

One of the functions of UNICEF is to

A. Prevent and control major disease
B. Prevent diseases outbreak by administering vaccines
C. Improve the health and nutrition of children and nursing mothers
D. Monitir enviromental pollution

Question 542:

• JAMB 1987

Nitrifying bacteria are important because they

A. Release nitrogen to the atmosphere
B. Convert atmospheric nitrogen to ammonia
C. Combine ammonia with nitrgen
D. Oxidize ammmonium salt to nitrates

Question 543:

• JAMB 1987

The process by which lime is added to clay soil is known as

A. Sedimentation
B. Flocculation
C. Leaching
D. Manuring

Question 544:

• JAMB 1987

Which of the plants is likely to have broad leaves and thin cuticle

A. R
B. S
C. T
D. U

Question 545:

• JAMB 1987

Which of the plants is likely to be desert species?

A. U
B. T
C. S
D. R