JAMB Biology 1983 Past Questions

Root hairs are developed from the

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

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

Herbs differ from shrubs because they

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

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

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

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

Which of the following substance is not found in urine?

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

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

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

In the onion bulb, food is stored in the

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

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

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 diseases is NOT caused by a virus?

A centipede differs from a millipede by its

An organism having one pair of identical genes is

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

Banana, plantain and pineapple can be grouped together because they

One disease NOT caused directly by bacteria is

In what order do the following structure develop during the metamorphosis of the toad? 1. External gills 2. Internal gills 3. Forelimbs 4.Hindlimbs 5. Mouth

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 following statements is NOT true of insectivorous plants?

which of these worms is beneficial to man?

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

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

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

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

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

The tuber cassava is NOT a stem tuber because it

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

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

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

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

In rhizopus carbohydrate is stored in the form of

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

‘Jointed skeleton’ is absent in the

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

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

Urea is produced in the

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

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

Which of the following features can be used to identify the figure above

The main function of 6 is to

The main function of 4 is to

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

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

Which of the following will not allow osmosis to take place