JAMB - Biology (1978)

1
A plant which grows on another plant without apparent harm to the host plant is called
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(B)
an epiphyte
2
Given the equation:
6CO\(_2\) + 6H\(_2\)O → C\(_6\)H\(_{12}\)O\(_6\) + 6O\(_2\) {Under sunlight & Chlorophyll)

The process represented by the above equation is?
پاسخ دهید
(C)
photosynthesis
3
Given the equation:
6CO\(_2\) + 6H\(_2\)O → C\(_6\)H\(_{12}\)O\(_6\) + 6O\(_2\) (Under sunlight & Chlorophyll)
The oxygen given off during the above process is derived from
پاسخ دهید
(E)
water
4
One of the function of xylem is
پاسخ دهید
(A)
strengthening the stem
5
People suffering from myopia
پاسخ دهید
(A)
can see near object clearly
6
The cilia in paramecium are use for
پاسخ دهید
(B)
locomotion
7
Euglena may be classified as a plant because it
پاسخ دهید
(A)
has chloroplast
8
A trawler on a fishing trip caught a type of animal with hairs on its body. This animal could have been
پاسخ دهید
(D)
a mammal
9
which of these type of skeleton is most appropriate for a cockroach?
پاسخ دهید
(B)
Exoskeleton
10
when protein are broken down they provide
پاسخ دهید
(D)
amino-acid
11
the function of lenticels is
پاسخ دهید
(C)
for gaseous exchange
12
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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(D)
5,4,1,3,2
13
Which of the following is a characteristic of animal cell?
پاسخ دهید
(C)
absence of large vacuoles
14
Nitrifying bacteria keep the soil fertile by
پاسخ دهید
(B)
converting ammonium salt to nitrate
15
In the life history of schistosoma (Bilharzia), one of the following is intermediate host
پاسخ دهید
(B)
snail
16
In which of the following groups of organisms do all the members have asexual method of reproduction?
پاسخ دهید
(E)
Ameoba, mucor (or penicillium ) and a green filamentous algae
17
The hormone which tones up the muscles of a person in time of danger is from the
پاسخ دهید
(C)
adrenal gland
18
The study of organism and the environment of an abandoned farmland is the ecology of?
پاسخ دهید
(E)
an ecosystem
19
A potometer with a leafy shoot weighed 18.9g initially and weighed 17.9g after one hour. From this it follow that
پاسخ دهید
(C)
the shoot lost 1g of water per hour
20
At fertilization
پاسخ دهید
(C)
the male nucleus fuses with the female nucleus
21
The neck region of the tape worm, (taenia) is responsible for the
پاسخ دهید
(C)
formation of new segment
22
Which of these is not true of the insect? The possession of
پاسخ دهید
(A)
two pairs of antennae
23
Rhizopus (or mucor)obtain its food from dead organic matter extracellularly. It is said to be
پاسخ دهید
(B)
saprophyte
24
The feature that distinguish the toad or frog from the fish is the absence of
پاسخ دهید
(A)
scales
25
Which of these is not associated with tadpole stages of toad or frog
پاسخ دهید
(E)
shell
26
Which of these is not associated with the movement of the toad, reptile or bird?
پاسخ دهید
(E)
Pecking
27
Which of these is not a part of the feather of a bird?
پاسخ دهید
(A)
Wing
28
Which of these is not a function of the mammalian skin/
پاسخ دهید
(D)
production of pigments to reduce temperature
29
which of these elements in plants is required in small quantities only
پاسخ دهید
(A)
Boron
30
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?
پاسخ دهید
(B)
30secs
31
The mammalian stomach can carry out a number of processes except
پاسخ دهید
(E)
production of trypsin
32
A spirogyra cell placed was placed in solution X after 1 minute the cell has been plasmolysed, solution X was
پاسخ دهید
(B)
a very strong sugar solution
33
A farmer X working in a swamp did not eat any food nor drink any water. Which of this diseases can he not contact
پاسخ دهید
(A)
Cholera
34
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
پاسخ دهید
(D)
liver
35
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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(D)
The tip of the seedling may have been covered
36
Which of these is not a characteristics of a wind pollinated flowers?
پاسخ دهید
(A)
A smaller quantities of sticky pollen produce
37
A germinating seed requires oxygen which is essential for
پاسخ دهید
(C)
The production of energy by oxidising essential carbonhydrate
38
Which of these products obtained from analyzing sweat from skin is not an excretory product?
پاسخ دهید
(C)
Dust
39
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
پاسخ دهید
(E)
100% round
40
During reproduction of the organism in figure above(ameoba) the first structure to divide is?
پاسخ دهید
(C)
3
41
The part numbered 12 is
پاسخ دهید
(C)
opercular plate
42
During the movement of the fish from point A to target B, one of these parts is not involved
پاسخ دهید
(E)
10
43
The number shown as 8 refers to
پاسخ دهید
(D)
guard cell
44
The structure responsible for trapping the sun's energy during photosynthesis is
پاسخ دهید
(C)
3
45
Which of these plays no role in photosynthesis?
پاسخ دهید
(D)
2