JAMB UTME - Biology - 1986

Viruses are regarded as non-living because they

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

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

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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?

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In an agricultural ecosystem, the biotic component consists of

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Which of the following has cones?

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

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

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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

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

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

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The main organic substances found in the human body are

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

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

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

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Blood circulation in a mammalian is said to be double because

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

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Which of the following is NOT true of spirogyra?

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

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

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The following are methods of soil conservation EXCEPT

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Gestation in mammals is the period

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

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Which of these animals is radially symmetrical?

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

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

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Which of the following lacks chaetae, tentacles and antennae?

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Which of these disease CANNOT be prevented by immunization?

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The main function of the structure labelled 2 is to

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The male cockroach differs from the female by having

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Which of the following is an example of discontinuous variation?

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Incomplete metamorphosis occurs in the

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

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Fishes are cold blooded because their body temperature is

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The swollen shoot disease of cocoa tree is caused by a

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

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

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Oxygen liberated during photosynthesis has been demonstrated to come from

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In community, bacteria and fungi are referred to as

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The fins making up the limbs of the bony fish are

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

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Which of these is a trace element?

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

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

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Nastic movement is

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

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The severe deficiency of vitamin C leads to

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Deamination occurs in the

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The structure labelled 1 is the

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

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