JAMB UTME - Biology - 1978

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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A spirogyra cell placed was placed in solution X after 1 minute the cell has been plasmolysed, solution X was

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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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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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Which of these is not associated with tadpole stages of toad or frog

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Which of these is not a part of the feather of a bird?

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Nitrifying bacteria keep the soil fertile by

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Which of these is not a function of the mammalian skin/

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which of these elements in plants is required in small quantities only

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when protein are broken down they provide

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Given the equation:
6CO2 + 6H2O → C6H12O6 + 6O2 {Under sunlight & Chlorophyll)

The process represented by the above equation is

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One of the function of xylem is

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Which of these is not associated with the movement of the toad, reptile or bird?

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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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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.

During reproduction of the organism in figure above the first structure to divide is

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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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The hormone which tones up the muscles of a person in time of danger is from the

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The part numbered 12 is

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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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Which of these is a direct photosynthetic product?

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Which of these plays no role in photosynthesis?

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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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which of these type of skeleton is most appropriate for a cockroach?

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Which of the following is a characteristic of animal cell?

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The neck region of the tape worm, (taenia) is responsible for the

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The study of organism and the environment of an abandoned farmland is the ecology of?

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People suffering from myopia

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the function of lenticels is

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The mammalian stomach can carry out a number of processes except

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At fertilization

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Which one of the following statements about the mammalian kidney is false?

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The structure responsible for trapping the sun's energy during photosynthesis is

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The number shown as 8 refers to

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Euglena may be classified as a plant because it

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Which of these is not a characteristics of a wind pollinated flowers?

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A germinating seed requires oxygen which is essential for

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The figure above represents an experiment with two types of soil. The experiment demonstrates

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Which of these products obtained from analyzing sweat from skin is not an excretory product?

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In the life history of schistosoma (Bilharzia), one of the following is intermediate host

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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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A germinating seed requires oxygen which is essential for

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Rhizopus (or mucor)obtain its food from dead organic matter extracellularly. It is said to be

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The cilia in paramecium are use for

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A plant which grows on another plant without apparent harm to the host plant is called

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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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During the movement of the fish from point A to target B, one of these parts is not involved

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Which of these is not true of the insect? The possession of

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The feature that distinguish the toad or frog from the fish is the absence of

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In which of the following groups of organisms do all the members have asexual method of reproduction?

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