In a population, food shortage may lead to

A. an increased survival rate

B. high reproduction rate

C. intra-specific competition

D. low rate of migration

The following effects are associated with deforestation except

A. gully erosion

B. extinction of plant species

C. migration of wildlife

D. increase in rainfall

The main reason for the conservation of wildlife is to

A. create national parks for recreation

B. maintain ecological balance in communities

C. prevent hunters from being 'cruel to animals

D. save some species from extinction.

Which of the following is an example of variation?

A. Blood

B. Tongue rolling

C. Reproduction

D. Growth

The parameters of size, height, weight and colour in a population of living things are examples of

A. environmental variation

B. non-heritable variations

C. continuous variations

D. discontinuous variations

Fingerprints are useful in crime detection because

A. the police have sophisticated fingerprint machines

B. thieves may leave their prints at the scene of a crime

C. no two people have the same fingerprint

D. fingerprints are easy to make

A person with blood group, O can be given blood from persons who have blood belonging to

A. group O only

B. group A only

C. groups A and O

D. groups A, B and O

A man heterozygous for albino gene marries a woman who is also heterozygous for the gene. Both have normal skin colour. The probability that they will have an albino child is

A. 1/3

B. 1/4

C. 4/4

D. 2/4

Which of the following statements about heredity is not true? In heredity the traits are

A. carried by genes

B. contained in the ovum and sperm

C. always transmitted by one parent

D. transmitted from parents to offspring

An example of a saprophytic relationship is a / an

A. vulture feeding on decaying meat

B. mushroom growing on decaying vegetation

C. boy eating stale bread

D. earthworm feeding on decaying vegetation.