JAMB UTME - Biology - 1984
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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.
Vraag 3 Verslag
The mammalian organ through which nourishment and oxygen diffuse into a developing embryo is called
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Vraag 4 Verslag
Which of the following cell constituents is NOT common in both plants and animals?
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Vraag 5 Verslag
A flowering plant is monoecious if
Vraag 6 Verslag
Fehling's solution will readily change colour from blue to reddish colour when it is
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Vraag 8 Verslag
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
Vraag 9 Verslag
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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Vraag 10 Verslag
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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Vraag 11 Verslag
The parts used by the tapeworm to fasten itself to the host’s intestine are the
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Vraag 14 Verslag
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.
Vraag 16 Verslag
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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Vraag 21 Verslag
Which of the following adaptations is NOT concerned with the flight of birds?
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Vraag 23 Verslag
Denitrifying bacteria in nature liberate gaseous nitrogen directly from
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Vraag 24 Verslag
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
Vraag 25 Verslag
Which of the following types of vertebrae occur in equal numbers in the rabbit, rat and man?
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Vraag 26 Verslag
If an animal is very active and has good muscular control, it is likely to have well-developed
Vraag 28 Verslag
The removal of a man’s pancreas by surgical operation can affect only the digestion of
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Vraag 33 Verslag
Which of the following lists of diseases, their causes and transmission is CORRECT?
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Vraag 34 Verslag
The structure above represents a quill feather. The structure labelled 'M' is the
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Vraag 39 Verslag
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?
Vraag 41 Verslag
Which of the following statements is NOT true of the piliferous layer of root? It
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Vraag 44 Verslag
The presence of a diastema in the jaw bone indicates that the mammal lacks the teeth suitable for
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Vraag 49 Verslag
Which of the following is NOT regarded as a pollutant on land or in the air?
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