JAMB Biology 1989 Past Questions

The structure labelled 5 is the

Which of the labelled parts of the cell contains ribonucleic acid?

Which structure is known as the power house of the cell?

When a virus is placed in a nonliving medium it

A characteristic of the phylum coelenterata is that

A multinucleate body without internal cell boundaries is characteristics

Double fertilization is a unique feature of

Which of the following phyla have members with both internal and external segmentation?

Mineral salts can be absorbed into the roots by

Which of the following is a common characteristic of crustaceans?

The pedipalpi in spiders are used for

The body of a snail is divided into head

In dicotyledonous stem, each companion cell is founded beside the

If a healthy potted plant is continuously kept in dim light

The pancreatic juice contains the enzymes amylopsin,

Aged erythrocytes are dissolved in the

The seedlings in rice field were found to have thin lanky growth with reddish leaves and poor root development. This is because the soil lacks

There will be agglutination when the

Which of the following is the function of lymph?

The lumbar vertebra when compared with a thoracic vertebra has a

Wind pollinated flowers usually have

The components of castor oil seed and the maize grain are similar EXCEPT for the

A corn differs from a bulb in that

Exponential increase in the population of an organism is a characteristic feature off

The irreversible life process by which new protoplasm is added to increase the size and weight of an organism can be termed

Fruit enlargement can be induced by spraying young ovary with

A fundamental similarity between nervous and hormonal system is that both

The region that control most of the unconscious processes of a mammalian body is the

During cell division, the two strands of chromosomes are joined at a point called

when the two alleles present in an organism are of the same type, the genotype is described as

If parents with blood groups AB and O produce six children

Which of the following is a sex-linked character?

In an ecosystem, the LEAST efficient energy transfer link is from

Lichen is an example of

A physiological adaptation of plants to the problem of excessive water loss is

which of the ways of controlling bilharzia can result in pollution?

which of the following disease can be caused by a bacterium?

Which of the following is a dangerous product of coal burning?

5 g of oven dried soil was heated in a furnace for 24 hours. After cooling, it weighed 4.8 g. What is the amount of humus in the soil?

Most irrigated lands often become unproductive in later years because of

Farmers practise crop rotation because it

Which of the labelled parts is used for feeling?

The structure labelled 2 is the

Which of the structure is the molar?

What is the function of 3?

The type of joint at the point labelled 5 is the

Which of the labelled bone is the ulna?

What is the name of the structure labelled 2?

In which of the habitats will plants show xeromorphic features most prominently?

Which ecological factor exerts the greatest influence on the structure of the profiles?