A fresh water plant such as water lily can solve the problem of buoyancy by the possession of

A. aerenchymarous tissues

B. dissected leaves

C. thin cell walls of the epidermis

D. water-repelling epidermis

The sequence of the biomes in Nigeria from port Harcourt to Damaturu is

A. estuarine → rain forest → Guinea Savannah → Sahel Savannah

B. rain forest → Guinea savannah → estuarine → desert

C. estuarine → Guinea savannah → rain forest → Sahel savannah

D. rain forest → estuarine → Guinea savannah → desert

Soil micro-organisms are beneficial because of their involvement in

A. photosynthesis

B. translocation

C. cycling of nutrients

D. respiration using soil air

Which of the following groups of diseases are associated with water? I Onchocerciasis II Schistosomiasis III Dracunculiasis IV Elephantiasis V Taeniasis

A. I, II and III

B. II, IV and V

C. II, III and IV

D. I, II and V

One of the ways which body cells differ from gamete cells is in the

A. type of centromeres they contain

B. number of chromosomes pairs they contain

C. type of chromatide they contain

D. number of chromosomes they contain

In blood transfusion, agglutination occurs when

A. white blood cells from two individuals meet

B. two different antibodies meet

C. two different antigens meet

D. contrasting antigens and antibodies meet

The unrestricted pattern is represented by

A. I

B. II

C. III

D. IV

The line that represents efficient recycling combined with stringent conservation is

A. IV

B. III

C. II

D. I

After one week of life, the weight of five chicks of the same sex hatched simultaneously from the eggs of the same hen and fed on the same diet were 45g, 40g, 35g, 33g and 30g. This is an example of

A. growth rate

B. natural selection

C. variation

D. mutation

The phenotype of an individual can be summed up as the

A. totality of the expressed traits

B. individual's physical appearance

C. individual's entire genetical make-up

D. physiological traits of individual