JAMB UTME - Biology - 1980

Which of the following organs produces bile?

The tips of some rice seedlings were cut off while some were left intact. Both were covered with a container which had not only one small hole to allow light through. After twenty-four hours it was observed that

A mosquito which produces eggs which float, and whose larvae lie horizontal to the water surface, also rests at the angle on a vertical surface. This type of mosquito is

A few grams of dried soil were first heated until red hot and then further heated until no more smoke was released. This experiment was to determine

The filament of spirogyra were put into equal volumes of sugar solutions X and Y. After 5 minutes, filaments from solution X had their cells contents rounded up while those from Y were unaffected. The experiment shows that

Biconcave lenses are used in the correction of an eye defect called?

An organism X lives entirely on the waste products in another organism Y. In this association X is a

For pollination and fruit formation, the essential part(s) of the flower should be the

The testa

Which of the following spreads malaria in Nigeria?

In anaerobic respiration, glucose is converted to one of the following

Some of the features of an animal are scales, teeth, nares and backbone. The animal is likely to be a

Which of the following food substances is digested in the stomach?

Leguminous plants, e.g Mucana, are usually planted in cultivated farmlands because they

During excretion of urea there is also a corresponding re-absorption of water into the blood. This re-absorption takes place in the

Reserved food materials is

Oxygen from the atmosphere reaches the mammalian blood stream through one of the path indicated below. Indicate the correct path, a = mouth, b = trachea, c = bronchiole, d = nostril, e = bronchus, f = alveoli

In animals, cilia, flagella, pseudopodia and chaetae, can be used for

If the bark and phloem tissue of a woody shoot are peeled off by ringing, the whole plant will die eventually die because?

which part of the human brain is concerned with reflexes controlling the rate of heart beat and breathing?

A student trying to find out the order in which organisms appear on a cleared plot is studying one of the following

A green plant growing in a compost pit is feeding

One of the following statement is NOT true of spirogyra

A potometer is used to determine the rate at which a shoot

Milk can be pasteurized by

In Mucor or Rhizopus carbohydrate is absorb in the form of

Water is required for seed germination to take place because it

The lime water in container C turned milky because

if three 30 cm lengths of glass tubes are tightly packed with clay, sand and loamy soils respectively and then stood in a beaker of water for one week, the level of water will be

Below are some group of diseases. Which group of diseases is caused by bacteria?

A fresh Kolanut weighing 1g was put into salt solution. After 3 hour, the kolanut weighed 1.2g. This simple experiment demonstration that

Which one of the following animals is NEVER a secondary host of tapeworms?

Why is the part labelled 5 thicker than 6?

The joint between the atlas and axis vertebrae allows for

During thunderstorms the energy of lightning discharge causes

The part of the cell solely responsible for respiration is the

The amount of water loss from a leaf can be detected using

The center which controls respiratory activities the mammalian brain is the

Human beings require vitamins in their diet because vitamins

The vacuole of a plant cell is

The following are connected with the movement of a reflex action (1) Central nervous (2) Muscles (3) Skin (4) Sensory nerve (5) Motor nerve. Which of the following sequences indicates a correct path?

Which of the labelled parts is the venga caval opening?

Which of the following hormones is produced during fright or when agitated?

In the figure above the structure which prevents friction between the bones is

Which one of the following parts of the mammalian body is most closely associated with the production of urine?

If a baby is a female, her mother's ovum must have been fertilized by a sperm carry the chromosome

A true fruit is formed from

The conversion of excess amino acids into urea occurs in the

The organ through which food and oxygen are supplied to the human embryo and which also prevents harmful materials from reaching the embryo is the

The lime water in container B turned milky because