JAMB Biology 2003 past questions

The umbrella-shaped fruiting body of a fully developed mushroom is the

The gall bladder of a mammal has a duct connected to the

The processes of water loss and intake indicated by the arrows labelled I and II are respectively

The opening of the stoma is controlled by the

Yam is used in this set-up because it

The similarity among organisms belonging to the same group will be least within each

Which of the following results is to be expected If the set-up is left for several hours?

Hermaphroditic reproduction can be found among the

The eggs of birds contain relatively larger quantities of yolk than those of amphibians and reptiles because

One distinctive feature in the life history of liverworts is that they exhibit

In the internal structure of plants, a wide pith in the centre is common to

Food is stored in the structure labelled

If a nursing mother is not producing enough milk, her hormonal system is probably deficient in

The structures that are common to both plant and animal cell are labelled

The type of joint between adjacent bones in the part labelled II is the

The cell component that is present in a prokaryotic cell is the

In the egg of a bird, the embryo is located in the

An insect whose economic importance is both harmful and benefit is the

The experiment is used to demonstrate that

In the experiment, the layer of oil serves to prevent water loss by

If water that has been coloured red is poured at the base of a wilting plant, it will appear as a red stain in the cells of the

The stunted growth of a leguminous plant suffering from nitrogen deficiency may be corrected by inoculating the soil with

Organisms I, II, III and IV have surface/volume ratios of 1:2. 1:3, 1:4 and 1:5 respectively. The organism that is likely to have the most complex transport system is

The aim of the experiment is to demonstrate

In the experimental set-up, the rubber sheet represents the organ called

The part of the mammalian digestive system where absorption of nutrients takes place is the

The most important hormone that induces the ripening of fruit is

Metabolic production of urea is carried out in the

In mammalian males, the excretory and reproductive system share the

The best method of propagating sugarcane is by

The response of plants to external stimuli in a non- directional manner is known as

The structure can be found in the

The point marked I is referred to as

Homologous pairs of chromosomes separate during

An example of a caryopsis is

The pioneer organisms in ecological succession are usually the

Mycorrhiza is an association between fungi and

The most effective method of dealing with non- biodegradable pollution is by

Soil fertility can best be conserved and renewed by the activities of

The correct sequence of biomes from northern to southern Nigeria is

One example of fossil fuels is

If the pair of allelels for baldness is given as Bb, a female carrier will be denoted by

An organism that has been extensively used to test the chromosome theory of heredity is

The type of reproduction that leeds to variation in animal and plant populations is

If a DNA strand has a base sequence TCA, its complementary strand must be

Which of the following requires the use of carbon dating to prove that evolution has occurred?

To select and retain the desirable trait of large body size with farmer has observed in his herd, the farmer needs to

The presence of sunken stomata and the folding of leaves are adaptations to

In a population of living things, the parameters of size, height, weight and colour are example of

Spines and shells on animals are adaptations for

If XN is the dominant allele for normal vision and Xn the recessive allele for colour-blindness, a boy with the genotype YXn will

The inactive state exhibited by an animal during hot dry seasons is termed

The first four children of a couple were all girls. The probability that the fifth will also be a girl is

An insect with a mandibulate mouth part will obtain its food by

Genetic counselling is important when a marriage is planned between a

What proportion of the offspring of a cross between two heterozygous parents will exhibit the recessive condition phenotypically?