2012 JAMB Biology Past Questions

Use the diagram above to answer this question.

The organelle responsible for heredity is labelled

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The part labelled IV is the

Which of the following is most advanced in the evolutionary trend of animals?

Which of the following is the lowest category of classification?

Plants that show secondary growth are usually found among the

The fungi are a distinct group of eukaryotes mainly because they have

An arthropod that is destructive at the early stage of its life cycle is

An animal body that can be cut along its axis in any plane to give two identical parts is said to be

Which of the following possesses mammary gland?

The feature that links birds to reptiles in evolution is the possession of

Countershading is an adaptive feature that enables animals to

Which of the following plant structures lacks a waterproof cuticle?

In the mammalian male reproductive system, the part that serves as a passage for both urine and semen is the

In plants, which of the following is required in minute quantities for growth?

Which of the following organisms is both parasitic and autotrophic?

A function of the hydrochloric acid produced in the human stomach during digestion is to

Which of the following is a polysaccharide?

Use the diagram above to answer this question. Arrows represent directional movement of materials.

Transportation in the xylem is represented by

Use the diagram above to answer this question. Arrows represent directional movement of materials.

The arrow labelled II represents the

The part of the mammalian ear responsible for the maintenance of balance is the

Which of the following is involved in secondary thickening in plants?

An example of a fruit that develops from a single carpel is

The developing embryo is usually contained in the part labelled

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The function of the part labelled III is to

Plant growth can be artificially stimulated by the addition of

The autonomic nervous system consists of neurons that control the

Plants of temperate origin can be grown in tropical areas in vegetation zones of the

The water cycle is maintained mainly by

Organisms living in an estuarine habitat are adapted to

The presence of stilt roots, pneumatophores, sunken stomata and salt glands are adaptive features of plants found in the

Which of the following animals can exist solely on the water they get from food and metabolic reactions?

The most likely first colonizers of a bare rock are

The carrying capacity of a habitat is reached when the population growth begins to

The abiotic factors that control human population include

An indigenous method of renewing and maintaining soil fertility is by

The diseases caused by waterborne pathogens include

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The graph illustrates

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The largest number of cassava plants has an approximate height of

Which of the following is true in blood transfusion?

A yellow maize is planted and all the fruits obtained are of yellow seeds. When they are cross-bred, yellow seeds and white seeds are obtained in a ratio 3:1. The yellow seed is said to be

When a colour-blind man marries a carrier woman. What is the probability of their offspring being colour blind?

If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant, it is an example of

The type of interaction shown is referred to as

Which of the following statements is true of the interaction?

The short thick beak in birds is an adaptation for

The basking of Agama lizards in the sun is to

The significance of a very large number of termites involved in nuptial swarming is to

The use and disuse of body parts and the inheritance of acquired traits were used to explain

From his study of Galapagos finches, Darwin derived his theory of evolution from