JAMB UTME - Biology - 1983

An organism having one pair of identical genes is

Which of the following diseases could be exclusively associated with river basin?

The main function of 6 is to?

A population is defined as the collection of

The movement of plant in response to external stimulus of no particular direction is

In a positive phototropic response of a coleoptile, the region of greatest curvature is brought about by the

28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil?

Which of the following statements on the mammalian circulatory system is NOT true?

Which of the following substance is not found in urine?

Urea is produced in the

In rhizopus carbohydrate is stored in the form of

Which of the following statements is NOT true of insectivorous plants?

Plants which can survive in places where the water supply is limited are

Which of the following will not allow osmosis to take place

If an organic compound has its hydrogen: oxygen ratio as 2:1, it is likely to be

Which of the following structure is NOT found in the female agama lizard?

Which sequence represents the correct order of organisms un a food chain? 1. Toad 2. Mucuna 3. Grasshopper 4. Snake 5. Hawk

Which of the following statements about the dentition of man is INCORRECT ? man has

The dental formula of a i(3/3); c(1/1); pm(4/4; m(2/3) = 42 represent that of a

Which of the labelled part in the figure above will develop into new bulb?

One disease NOT caused directly by bacteria is

Which of the following instruments is used for determining turbidity of water?

In a dicot leaf, guard cells differ from other epidermal cells because they

In woody plants, grass and water vapour are transported across the stems by the

A centipede differs from a millipede by its

What is the genetic ratio of the F2 generation if members of F generation are allowed to self-pollinate?

In the onion bulb, food is stored in the

The function of the ossicles (malleus, incus and stapes) in the mammalian ear is

Which of the following statements is NOT true of mammalian erythrocytes?

which of these worms is beneficial to man?

Which of the following elements are necessary for the formation of chlorophyll in a plant?

Which of the following diseases is NOT caused by a virus?

The kidneys of all vertebrates act as osmoregulators. This means that they

Root hairs are developed from the

Herbs differ from shrubs because they

If an isolated living cell is left in distilled water for two hours, it is likely to

The part of the mammalian brain responsible for maintaining balance is the

Starting from the skull end the vertebrate are arranged in the following order

‘Jointed skeleton’ is absent in the

Banana, plantain and pineapple can be grouped together because they

When spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it

Which of the following represents the evolutionary sequence in these plants? 1. Flowering plants 2. Ferns 3. Mosses 4. Algae 5. Conifers

What type of fruit is formed from a single flower having several carpels?

Groundnut is not really a 'nut' in the biological sense because

The tuber cassava is NOT a stem tuber because it

The path taken by glucose from the ileum to the heart is

Which of the following statements about the rate of transpiration is INCORRECT? It is

Which of the following is NOT a characteristic of monocot plants?