Biology JAMB, WAEC, NECO AND NABTEB Official Past Questions

The depth of illumination in a water body can be measured with a

Which of the following ions is involved in the conduction of the nerve impulse?

The gland directly affecting metabolic rate, growth and development is known as

The process of walking is under the control of the part of the brain called

Biological growth refers strictly to an increase in the

The sex of a foetus is determined during

The term caryopsis is used to describe a fruit in which the

An example of a plant having the placentation shown is

The type of placentaion shown is

When a healthy shoot of a flowering plant is illuminated from one side, auxins, accumulate on the

During the bending of the arm, the biceps muscles

The excretory structure in the earthworm is the

During respiration, air circulates round plant tissues via the

The end product of glycolysis in plants and animals is

Which of following is NOT involved in the transport of substance in the body?

The mammalian organ which acts both as a digestive and as an endocrine organ is the

Which vitamin plays an important role in blood clotting?

In an experiment to investigate the effect of nitrogen on the growth of plants, the substrate should be a medium of

2H₂ → 2H₂ + O_2(g). The equation above represents a part of the light stage of photosynthesis. Which of the following must be presents for this reaction to occur?

Secondary thickening in dicotyledonous stem is controlled by the

Birds maintain their body temperature with the help of their