JAMB UTME - Biology - 1984

A mixture of mercurous and mercuric nitrates is added to a food substance. A white precipitates is formed which on gentle heating turns red. The food substance is

Exoskeleton is NOT found in the

Which of the following sequences represents process of blood clothing? 1. Fibrins forms a network of threads 2. Red blood cells are caught and clot is formed 3. Fibrinogen in plasma changes into fibrin 4. Blood is exposed to air

Osmosis can be defined as the movement of

The mouth parts of the housefly are adapted for

The parts used by the tapeworm to fasten itself to the host’s intestine are the

The dorsal and anal fins of fish are used for

Underground stems which grow horizontally through the soil are

Anaerobic respiration in yeast produces

Which of the following is NOT regarded as a pollutant on land or in the air?

If an animal is very active and has good muscular control, it is likely to have well-developed

The removal of a man’s pancreas by surgical operation can affect only the digestion of

Spirogyra and mucor can be grouped together as Thallophyta because

The transect method can be used in ecology to show the

A man with normal haemoglobin (AA) marries a woman who has sickle-cell haemoglobin (SS). They have a child who has a sickle-cell trait. Which of the following genotypes could be associated with the child’s haemoglobin?

Erosion can be reduced along shape by

Which of the following statements is NOT true of the piliferous layer of root? It

An anemometer is an instrument for measuring

Green plants are important in the ecosystem because they are

Which of the following cell constituents is NOT common in both plants and animals?

Mosses, liverworts and ferns can be grouped together because they

The process of soil erosion is usually from

Leaching is

Which of the following groups of factors is completely abiotic?

Which of the following adaptations is NOT concerned with the flight of birds?

Which of the following is INCORRECT? The prothallus of a fern

Denitrifying bacteria in nature liberate gaseous nitrogen directly from

Which of the following types of vertebrae occur in equal numbers in the rabbit, rat and man?

If a handful of soil is shaken with water and left to settle, the soil particles will settle from light to heavy particles as follows

Normally the flow of blood is NEVER from

The mammalian organ through which nourishment and oxygen diffuse into a developing embryo is called

The presence of a diastema in the jaw bone indicates that the mammal lacks the teeth suitable for

Pepsin is a digestive enzymes which breaks

The young chick is formed from

The character-producing factors in living organisms are

Which of the following invertebrates does NOT possess antennae?

Which of the following is NOT a waste product of plants?

Which parts provide food for the developing chick?

Fehling's solution will readily change colour from blue to reddish colour when it is

Blood clotting is initiated by

Which of the following lists of diseases, their causes and transmission is CORRECT?

How many nuclei are found in pollen tube during fertilization?

The axial skeleton of a mammal does not include the bones of the

In the Burret test, some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive results?

The structure above represents a quill feather. The structure labelled 'M' is the

A flowering plant is monoecious if

Spirogyra reproduces vegetatively by

Heat produced in tissue respiration in plants is

Which of the following statement is NOT true of enzymes? They

The male toad differs from the female by having