Biology JAMB, WAEC, NECO AND NABTEB Official Past Questions

The following pairs of traits are examples of continuous and discontinuous variations respectively except

The primary cause of species endangerment is

Which of the following factors would be least likely to act as a density dependent limiting factor in a population of
mice?

The detection of vibro cholera in public drinking water is a sign of

The use of water closet and septic tanks is preferred to the use of
bucket and pit latrines because

Which of the following factors exerts a major effect on the distribution of living organisms in the habitat?

In which of the zones can very few organisms be found

Plants with breathing roots are characteristic features of vegetation in

How many food chains are in the diagram?

The best title for the above diagram is

Which of the following instruments would be most appropriate in comparing the air pressure at different places in the habitat?

The following are abiotic components of the ecosystem except

The area around the earth where life activities go on is referred to as

A space containing a group of interactive organisms
is called

Which of the following food substances will have
little or no calorific value?

The appropriate food to be given to the child in the picture above is?

Which of the following digestive enzymes would be greatly affected if the liver fails to
produce bile?

The diagram above is an illustration of an experimental setup to test the action of
yeast. What test would be used to confirm the nature of the gas given off at?

The bones of the legs of a six years old boy are observed to be weak and crooked. Which of the following elements
were deficient in his mother’s diet at pregnancy?

Excess carbohydrates can be stored in the muscles in the form

The purpose of proteins in the diet of a mammal is to