JAMB UTME - Biology - 1984

Denitrifying bacteria in nature liberate gaseous nitrogen directly from

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Anaerobic respiration in yeast produces

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Green plants are important in the ecosystem because they are

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How many nuclei are found in pollen tube during fertilization?

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

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The mouth parts of the housefly are adapted for

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House flies can be easily identified by the four dark, longitudinal stripes on top of the thorax, or middle body region. They vary in length from l/8-l/4 of an inch. Their mouth parts are adapted for sponging up liquids; they cannot bite. These flies can only ingest liquid food. They feed on attractive solid food by regurgitating saliva on it. The saliva liquifies the solid material which is then sponged up with the proboscis. They require water since they are continually salivating and voiding liquids. Fly specks seen on many surfaces visited by house flies are the excreted wastes.

The transect method can be used in ecology to show the

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

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The male toad differs from the female by having

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Underground stems which grow horizontally through the soil are

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

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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?

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

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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

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A flowering plant is monoecious if

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The dorsal and anal fins of fish are used for

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Heat produced in tissue respiration in plants is

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Which parts provide food for the developing chick?

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

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

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Spirogyra and mucor can be grouped together as Thallophyta because

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

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Erosion can be reduced along shape by

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An anemometer is an instrument for measuring

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

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

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

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Mosses, liverworts and ferns can be grouped together because they

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The young chick is formed from

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

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Plants need to excrete excess carbon dioxide and oxygen. Carbon dioxide is a waste product of aerobic respiration in plant cells. Oxygen is a waste product of photosynthesis

Blood clotting is initiated by

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

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Pepsin is a digestive enzymes which breaks

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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

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Spirogyra reproduces vegetatively by

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Spirogyra reproduce using sexual or asexual reproduction methods. The process of reproduction varies depending on species of spirogyra. In vegetative varieties, reproduction occurs through the process of fragmentation, which involves the transformation of spirogyra through intercalary mitosis to produce new filaments.

Exoskeleton is NOT found in the

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Normally the flow of blood is NEVER from

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The process of soil erosion is usually from

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

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

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Osmosis can be defined as the movement of

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

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Leaching is

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Which of the following groups of factors is completely abiotic?

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

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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?

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Which of the following invertebrates does NOT possess antennae?

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

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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

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The character-producing factors in living organisms are

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