Biology JAMB, WAEC, NECO AND NABTEB Official Past Questions

Atmospheric nitrogen is converted to soil nitrogen for plant use by

An ecological succcession often leads to

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?

The fruit represented is mainly dispersed by?

The part labelled II is the

Serum differs from blood plasma because

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

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

For growth to occur in organisms, the rate of

The inner ear contains two main organs, namely, the

Short-sightedness can be corrected by lenses which are

Bacteria in the large intestine of man are important in the

The scapula and the ischium are part of the

The gas occupying the space labelled I is

The substance labelled II originates from

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

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

In mammals, reabsorption of salt takes place in

The parts labelled I and II make up the

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