Study the genetic cross above showing the inheritance of blood groups from the cross above which of the following F offspring does not
belong to the father?

A. AA

B. AO

C. OB

D. OO

E. AB

Which of the following is a function of the chromosome?

A. Transmission of hereditary traits

B. Protein synthesis

C. Excretion

D. Energy production

E. Manufacture of enzyme

Which of the following does not illustrate adaptation to the
environment?

A. Colour changes by chameleon

B. Streamline shape of fishes

C. Light bones in birds

D. Development of big muscles by a weight lifter

E. Possession of tins by fishes

The changing of colour by a chameleon to that of the environment is
an example of

A. adaptive radiation

B. protective coloration

C. courtship display

D. display of body colour

E. territorial behaviour

The division of labour in social insects is an example of

A. structural adaptation

B. physiological adaptation

C. commensalism

D. behavioural adaptation

E. hormonal influence

The swarming especially at the beginning of the rainy season is a courtship behaviour shown by

A. migratory birds

B. pigeons

C. crickets

D. winged termites

E. bees

Lamarck’s evolution theory could be summarised by the statement that

A. only the fittest can survive in a challenging environment

B. species that are unable to adapt become extinct

C. new characteristics do not arise in organisms in time of need

D. the changing environment imposes structural physiological and behavioural changes in organisms

E. in a changing and unstable environment nature rejects the weak

The property of clay soil that prevents it from supporting thick vegetation is its

A. possession of chemically weathered granite rocks

B. inability to retain much water

C. tendency of becoming waterlogged

D. porosity and low water retention ability

E. high capillary spaces between the soil particles