JAMB UTME - Biology - 1986

In an agricultural ecosystem, the biotic component consists of

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

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

Which of the following is an example of discontinuous variation?

In community, bacteria and fungi are referred to as

The structure labelled 1 is the

Oxygen liberated during photosynthesis has been demonstrated to come from

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

Which of these animals is radially symmetrical?

The main function of the structure labelled 2 is to

Deamination occurs in the

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

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

The swollen shoot disease of cocoa tree is caused by a

The male cockroach differs from the female by having

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

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

Which of the following is NOT true of spirogyra?

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

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

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

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?

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

The fins making up the limbs of the bony fish are

Incomplete metamorphosis occurs in the

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

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

Which of the following lacks chaetae, tentacles and antennae?

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

Viruses are regarded as non-living because they

Which of these is a trace element?

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

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

Nastic movement is

Blood circulation in a mammalian is said to be double because

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

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

Fishes are cold blooded because their body temperature is

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

Which of the following has cones?

Which of these disease CANNOT be prevented by immunization?

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

Gestation in mammals is the period

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

The main organic substances found in the human body are

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

The following are methods of soil conservation EXCEPT

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

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

The severe deficiency of vitamin C leads to