JAMB Biology 2000 Past Questions

The part that will develop into an organ for feeling is labelled

The part labelled II is the

Which of the following features are all associated with monocots?

The set of fins that control steering, balancing and change of direction and pitch in fish is

The most recently evolved structure in animals is the

Coelom is absent in the class of animals termed

A characteristic of vertebrates that is unique to mammals is

Th order in which organic evolution has progressed in plants is

In which part of the human body does the secretion of the growth hormone occur?

The parts labelled I and II make up the

In mammals, reabsorption of salt takes place in

The part of the brain that controls body posture in mammals is the

Peripherals arrangement of vascular tissues in dicots is a characteristic of the internal structure of the

The substance labelled II originates from

The gas occupying the space labelled I is

The scapula and the ischium are part of the

Bacteria in the large intestine of man are important in the

Short-sightedness can be corrected by lenses which are

The inner ear contains two main organs, namely, the

For growth to occur in organisms, the rate of

The production of violet colouration, when dilute NaOH solution is added to a solution of food substance, followed by drops of 1% CuSO₄ solution while shaking, indicates the presence of

The greatest amount of energy will be obtained by the oxidation of 100kg of

The chamber of the mammalian heart with the thickest wall is the

Serum differs from blood plasma because

The part labelled II is the

The fruit represented is mainly dispersed by

In an experiment to estimate the volume of air in a soil sample using a measuring cylinder, it was found that:
initial volume of water .... = p cm₃
volume of soil before mixing with water = q cm₃
Final volume of water after adding soil = r cm₃
From the data above, which of the following deductions is correct?

An ecological succcession often leads to

Atmospheric nitrogen is converted to soil nitrogen for plant use by

I. High birth rate and high immigration rate II. Low birth rate and high immigration rate II. Low mortality rate and low emigration IV. High mortality rate and high emigration rate. Which combination of the above can cause rapid over-crowding in climax biotic communities and human settlements?

The soil becomes toxic to plants when the concentration of its essential elements is in the range labelled

The range at which soil essential elements concentration is recorded for optimal plant growth is marked

Which of the following growth activities in plants is brought about by gibberellins?

Which of the following are adaptations of animals to aquatic habitats?

Which of the following is an adaptation of forest species?

In a food chain, each succeeding level in a forward direction represents

The disaster that would have the least destructive impact on animal life and balance in nature is

The legs and beak of an egret resemble those of the heron because they

The factors that determine the distribution of vegetation zones are

A cross between an albino female and a genetically normal male will result in offspring that are

The pollutants that contribute to the depletion of the ozone layer in the atmosphere are

The surest way to combine the best qualities of both parents in the offspring is by

The older fossil-bearing rocks, in contrast to the more recent ones, are more likely to contain

In a group of male Agama lizards, the one with the brightest head colour is the

Example of water-borne and sex linked diseases are

The mutation theory of organic evolution was propounded by

A certain savanna grasshopper changes colour from green during the rainy season to brown during the dry season and black after dry season bush fires. The reason for these colour changes is that the

Complex social behaviour and organization are found mostly in

Which of the following structural features are adapted for uses other than water conservation?