JAMB UTME - Biology - 1984
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A flowering plant is monoecious if
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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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Fehling's solution will readily change colour from blue to reddish colour when it is
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The process of soil erosion is usually from
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Anaerobic respiration in yeast produces
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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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Which of the following statements is NOT true of the piliferous layer of root? It
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The mammalian organ through which nourishment and oxygen diffuse into a developing embryo is called
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The axial skeleton of a mammal does not include the bones of the
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The removal of a man’s pancreas by surgical operation can affect only the digestion of
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Spirogyra and mucor can be grouped together as Thallophyta because
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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
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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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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.
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Which of the following is NOT regarded as a pollutant on land or in the air?
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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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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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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.
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Which of the following cell constituents is NOT common in both plants and animals?
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