Which of the following substances cannot control the growth of harmful micro organisms?

A. Antibiotics

B. Hypertonic salt solution

C. Disinfectants

D. isotonic sugar solution

E. Antiseptics.

Which of the following is the underlining Principle in the adoption of biological control of pests?

A. Knowledge of agricultural practices by the farmer

B. Relationship between plants and animals

C. The presence of poisonous chemicals in the farm

D. The relative population of plants and animals in the farm

E. The predator prey relationship in ecological community

The largest game reserve in Nigeria is the

A. Kianji game reserve in Niger state

B. Zamfara Forest Reserve In Sokoto state

C. Yankari game reserve in Bauchi state

D. Borgu park reserve in Niger state

E. Oban hill Game reserve in Cross River state

The following agencies are responsible for conservation of in Nigeria except

A. Forest department

B. Nigerian conservation society

C. Games reserve authority

D. Nigerian red cross society

E. Ministry of agriculture and Natural resources

The table below indicates the result of an experiment during which grains of different colours in two maize cobs were counted.

Which of the following ratios agrees with the result?

A. 9:3:3

B. 1:2:1

C. 1:3:1

D. 2:1:1

E. 2:3:2

One of the factors that must be considered for safe blood transfusion is

A. social class of the donor

B. age of the recipient

C. rhesus factors of the donor and the recipient

D. nationality of the donor

E. weight of the recipient

One of the major criticisms against ‘Mendelian laws is that they do not recognize that

A. one trait is often controlled by many pairs of genes

B. single factor inheritance is never a reality

C. complete dominance is always possible

D. incomplete dominance is not possible

E. hybrids exist in living organisms

Identical twins inherit their genes from

A. the same ovum and different sperms

B. the same sperm and different ova

C. different sperms and many ova

D. the same ovum and the same sperm

E. many ova and many sperms

The offspring produced when pure strains interbreed is described as

A. dominance

B. phenotype

C. allele

D. genotype

E. hybrid

Which of the following diseases or disorders can be prevented by the application of the knowledge of
heredity through marriage counselling?

A. Sickle cell anaemia

B. Haemophilia

C. Diabetes mellitus

D. Colour blindness

E. River blindness