JAMB UTME - Biology - 1978
Frage 2 Bericht
Rhizopus (or mucor)obtain its food from dead organic matter extracellularly. It is said to be
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Frage 5 Bericht
The following events take place during conjugation in spirogyra 1. The protoplasm of each of the conjugating cell separate from the cell wall to form a Gamete; the gamete of one filament passes through the conjugation tube to meet the gamete of the other filament 2. The zygote soon become surrounded by thick brown wall to become zygospore which burst after a short rest and germinate to produce a new filament 3. The nuclei of the gametes fuse to form a zygote 4. The protuberance meet and where they touch the cell-wall disappear so that a conjugation tube joining the two cell is formed 5. protuberance appear on the wall of the cell of two filament of spirogyra lying side by side opposite one another. Now what is the correct sequence in which the above sequence occur?
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The correct sequence in which the above events occur during conjugation in Spirogyra is 5, 4, 3, 1, 2. First, protuberances appear on the cell walls of two adjacent Spirogyra filaments lying opposite to each other. These protuberances grow towards each other and where they touch, the cell wall disappears to form a conjugation tube. Next, the protoplasm of each of the conjugating cells separate from the cell wall to form gametes. One gamete passes through the conjugation tube to meet the gamete of the other filament. The nuclei of the gametes then fuse to form a zygote. The zygote is soon surrounded by a thick brown wall to become a zygospore. The zygospore undergoes a short period of rest before it bursts and germinates to produce a new Spirogyra filament. Therefore, the correct sequence is 5, 4, 3, 1, 2.
Frage 7 Bericht
A spirogyra cell placed was placed in solution X after 1 minute the cell has been plasmolysed, solution X was
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Frage 8 Bericht
During the movement of the fish from point A to target B, one of these parts is not involved
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Frage 9 Bericht
In a photo-tropic experiment, young seedlings in a box were subjected to light from one direction. The seedling continue to grow erect. Which of the following statement is correct
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Frage 10 Bericht
which of these elements in plants is required in small quantities only
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Frage 12 Bericht
In a breeding program a cross was made between two true breeding cow-pea types: one with round seeds and the other with wrinkled seed. If roundness is dominant why wrinkleness is recessive, in the first filial generation all the seeds produced will be
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Frage 13 Bericht
a potometer was used to compare the rate of loss of the same volume of water from a plant under different environmental conditions as under a fan, at the sea shore, under the sun, in the airy laboratory and in cupboard. What time was likely to have been obtained in a cupboard?
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Frage 15 Bericht
THE figure above shows diagram for the correction of shortsightedness. If the unbroken lines represents light rays from the object and the broken lines the refracted rays through the lens, which of these is correct
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Frage 19 Bericht
In the life history of schistosoma (Bilharzia), one of the following is intermediate host
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Frage 20 Bericht
The feature that distinguish the toad or frog from the fish is the absence of
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Frage 22 Bericht
A plant which grows on another plant without apparent harm to the host plant is called
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Frage 24 Bericht
Which of these is not associated with the movement of the toad, reptile or bird?
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Frage 25 Bericht
The study of organism and the environment of an abandoned farmland is the ecology of?
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Frage 26 Bericht
Given the equation:
6CO2 + 6H2O → C6H12O6 + 6O2 {Under sunlight & Chlorophyll)
The oxygen given off during the above process is derived from
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Frage 27 Bericht
Which of the following is a characteristic of animal cell?
Frage 29 Bericht
The figure above represents an experiment with two types of soil. The experiment demonstrates
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Frage 30 Bericht
Which of these products obtained from analyzing sweat from skin is not an excretory product?
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Frage 32 Bericht
Given the equation:
6CO2 + 6H2O → C6H12O6 + 6O2 {Under sunlight & Chlorophyll)
The process represented by the above equation is
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Frage 33 Bericht
Which of these is not a characteristics of a wind pollinated flowers?
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Frage 34 Bericht
In which of the following groups of organisms do all the members have asexual method of reproduction?
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Frage 35 Bericht
A trawler on a fishing trip caught a type of animal with hairs on its body. This animal could have been
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Frage 40 Bericht
The structure responsible for trapping the sun's energy during photosynthesis is
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Frage 41 Bericht
During reproduction of the organism in figure above the first structure to divide is
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Frage 42 Bericht
A farmer X working in a swamp did not eat any food nor drink any water. Which of this diseases can he not contact
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Frage 44 Bericht
Which one of the following statements about the mammalian kidney is false?
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Frage 45 Bericht
Which of these is not associated with tadpole stages of toad or frog
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Frage 47 Bericht
A potometer with a leafy shoot weighed 18.9g initially and weighed 17.9g after one hour. From this it follow that
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A carbohydrate molecule in the blood in the right ventricles of the heart is pumped into the cell of the toe of a man. Which of these structure is it unlikely to pass through en-route
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Frage 49 Bericht
The hormone which tones up the muscles of a person in time of danger is from the
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