JAMB UTME - Biology - 1986

If a woman who is a carrier of sickle cell trait (AS) married a man who is a sickler (SS) and they had four children, how many of them would be normal?

Gestation in mammals is the period

Which of the following is NOT true of spirogyra?

Oxygen liberated during photosynthesis has been demonstrated to come from

The extract from food substance reacting with sodium hydroxide and copper sulphate solutions will produce violet to purple coloration if

Two main distinguishing features of the cervical vertebra are the presence of

Which of these disease CANNOT be prevented by immunization?

The hormones which regulates the amount of glucose in the blood is called

In the mammalian skin, melanin and keratin are contained in the

Incomplete metamorphosis occurs in the

The main function of the structure labelled 2 is to

Sample of different soil types are packed in glass tubes whose lower ends are plugged with cotton wool, if these tubes are suspended in a trough of water, water will rise highest after a few hours in

Which of the following lacks chaetae, tentacles and antennae?

Which of the following elements is essential for the formation of haemoglobin?

In an agricultural ecosystem, the biotic component consists of

Which of the following statement is NOT correct with respect to inhalation in mammals? The

The following are methods of soil conservation EXCEPT

Which of the following ecological factors are common to both terrestrial and aquatic habitats?

A larger percentage of tropical soils tends to be acidic because they

The swollen shoot disease of cocoa tree is caused by a

If a person is bitten by a snake on the leg, it is advisable for him to

The severe deficiency of vitamin C leads to

Blood circulation in a mammalian is said to be double because

The equation that can be used to summarize the process of anaerobic breakdown of sugar is

Deamination occurs in the

Which is the correct order of water loss from the leaf? 1 Mesophyll 2 Veins 3 Substomatals cavity 4 Stomata

Which of these is a trace element?

When the original king and queen of termites die, they are replaced by

Fishes are cold blooded because their body temperature is

In an ecosystem, animals which feed directly on plants are called

The main organic substances found in the human body are

Nastic movement is

In community, bacteria and fungi are referred to as

Which of the following has cones?

Evidence that a tooth is a living part of the mammalian can be found within the

Which of the labelled parts will develop into a new maize plant?

Which of the following is an example of discontinuous variation?

Which of the following pairs are fully adapted to terrestrial life?

For effective functioning of a bird's quill feather, hooks fit on the ridge of the

Viruses are regarded as non-living because they

The stem differs from the root in having the xylem and phloem strands

A major limitation in the use of the potometer for measuring the rate of transpiration is that

The aperture between the left auricle and the left ventricle is guarded by the

In addition to the high calories derived from fats and oils, they are

The three important organs that are situated close to the stomach are

An instrument that can be used to demonstrate phototropism and geotropism in plants is the

The structure labelled 1 is the

Which of these animals is radially symmetrical?

The fins making up the limbs of the bony fish are

The male cockroach differs from the female by having