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The lime water in container C turned milky because?
ACarbon dioxide was produced by plant during respiration
BCarbon dioxide entered through the filter pump
COxygen reacts with lime water to produce milkiness
DSoda lime did not remove carbon dioxide from the air
EThe delivery tubes were not well connected
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Question 2
jamb1980
The lime water in container C turned milky because
Acarbon dioxide was produced by plant
Bduring respiration carbon dioxide entered C
Coxygen reacts with lime water to produce milkiness
Dsoda lime did not remove carbon dioxide from air
Ethe delivery tubes were not well connected
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Question 3
jamb1980
Reserved food materials is
Astored in the parts numbered 2 and 3
Bstored in the part numbered 3 only
Cstored in the part numbered 4 and 5
Dnot concentrated in any particular part
Efound in all except 1
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Question 4
jamb1980
The testa
Ais normally absent
Bis included in the part numbered (1)
Cis fused in the part numbered (3)
Dis the part numbered (1)
Esurrounds the part numbered (4) and (5)
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Question 5
jamb1980
Which of the labelled parts is the venga caval opening?
A1
B2
C3
D4
E5
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Question 6
jamb1980
Why is the part labelled 5 thicker than 6?
A5 is the left ventricle and 6 the right ventricle
B6 is the left ventricle and 5 the right ventricle
C5 receives blood from the left auricle and 6 from the right
D5 pumps blood round the body and 6 pumps blood into the lungs
E5 deals with oxygenated blood and 6 deals with deoxygenated blood
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Question 7
jamb1980
In the figure above the structure which prevents friction between the bones is
A1
B2
C3
D4
E5
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Question 8
jamb1980
In animals, cilia, flagella, pseudopodia and chaetae, can be used for
Areproduction
Bfighting
Cattachment to plants
Dlocomotion
Elocating sensation
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Question 9
jamb1980
The amount of water loss from a leaf can be detected using
Alime-water
Bred litmus paper
Cblue litmus paper
Dblue cobalt chloride paper
Epink cobalt chloride paper
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Question 10
jamb1980
A mosquito which produces eggs which float, and whose larvae lie horizontal to the water surface, also rests at the angle on a vertical surface. This type of mosquito is
AAedes
BAnopheles
CCulex
DTiger mosquito
Enone of the above
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Question 11
jamb1980
Below are some group of diseases. Which group of diseases is caused by bacteria?
ATuberculosis, smallpox
BGonorrhoea, measles
CTuberculosis, polio
DSleeping sickness, measles
ESyphilis, gonorrhoea
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Question 12
jamb1980
Oxygen from the atmosphere reaches the mammalian blood stream through one of the path indicated below. Indicate the correct path, a = mouth, b = trachea, c = bronchiole, d = nostril, e = bronchus, f = alveoli
Aa → b → e → f → d
Bb → d → f → e → c
Cd → b → e → c → f
Db → a → f → e → c
Ef → e → c → d → c
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Question 13
jamb1980
A few grams of dried soil were first heated until red hot and then further heated until no more smoke was released. This experiment was to determine
Aamount of water in soil
Bpercentage of water in soil
Cpresence of humus in soil
Dresistance of laterities to heat
Erelease of smoke from the soil
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Question 14
jamb1980
During thunderstorms the energy of lightning discharge causes
Aoxygen and nitrogen to combine
Bmore carbon dioxide to be formed
Cnitrites to be converted to nitrates
Dnitrates to be converted to nitrogen
Edeath
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Question 15
jamb1980
Leguminous plants, e.g Mucana, are usually planted in cultivated farmlands because they
Aenrich the soil with phoshates
Bprovide animals with food
Cenrich the soil with organic nitrogen
Dprotect the soil from being over-heated
Eprotect the micro organisms in the soil
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Question 16
jamb1980
If a baby is a female, her mother's ovum must have been fertilized by a sperm carry the chromosome
AX
BXY
CXX
DYY
EY
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Question 17
jamb1980
if three 30 cm lengths of glass tubes are tightly packed with clay, sand and loamy soils respectively and then stood in a beaker of water for one week, the level of water will be
Alowest in the tube with clay
Bthe same in all tubes
Clowest in the tube with loamy soil
Dhighest in the tube with sandy soil
Elowest in the tube with sandy soil
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Question 18
jamb1980
The tips of some rice seedlings were cut off while some were left intact. Both were covered with a container which had not only one small hole to allow light through. After twenty-four hours it was observed that
Athe cut tips was bent away from the light
Bthe cut tips bent towards source of light
Cthe intact tips bent away from the light
Dthe intact tips bent towards the light
Eboth tips bent away from light
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Question 19
jamb1980
An organism X lives entirely on the waste products in another organism Y. In this association X is a
Asymbiont
Bcommensal
Csaprophyte
Dparasite
Eepiphyte
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Question 20
jamb1980
A student trying to find out the order in which organisms appear on a cleared plot is studying one of the following
