Study and practice Biology past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.
Which of the following is the effect of continuous tillage on an ecological system?
AAddition of more. humus to the soil
BDecrease in productivity
CIncrease in yield
DImproved fertility
EPrevention of erosion
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Question 812
waec1996
The maintenance of a constant internal environment of an organism is known as
Ahomeostasis
Bhomeorhesis
Cturgidity
Dhomoiothermy
Ediuresis
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Question 813
waec1996
In which of the following groups is nephridium found?
ACrustaceans
BReptiles
CBirds
DMammals
EAnnelids
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Question 814
waec1996
Which of the following statements about the lymphatic system is not correct?
AThe lymph vessels are always larger in size than the arteries
BThe flow of lymph is assisted by general muscular movement
CLymph flows only in one direction due to the presence of valves
DLymph is emptied into the blood circulatory system through a vein
ELymph node becomes swollen during serious infections
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Question 815
waec1996
Which of the following is more concentrated in the blood within the renal artery than the blood within the
renal vein?
AUrea
BRed blood cells
CGlucose
DProtein
EWhite blood cells
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Question 816
waec1996
Which of the following articulates with the pelvic girdle?
AV
BIV
CIII
DII
EI
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Question 817
waec1996
Which of the following articulates with the ribs?
AI
BII
CIII
DIV
EV
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Question 818
waec1996
Which of the following are found immediately next to the skull?
AI
BII
CIII
DIV
EV
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Question 819
waec1996
The thoracic vertebra differs from all the other vertebrae by the possession of
Along neural spine
Bodontoid process
Cvertebraterial canal
DLarge centrum
Etransverse processes
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Question 820
waec1996
Which of these instruments can be used to perform an experiment on geotropism?
APotometer
BCup anemometer
CKlinostat
DKymograph
ESphygmomanometer
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Question 821
waec1996
ln which of the following structures will cells undergoing meiosis be seen?
AAt the apices of stem and root
BIn the cortex of the stem
CIn the pallisade mesophyll of the leaf
Dln the ovary of a flower
Eln the root of a seedling
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Question 822
waec1996
Movement of water across a semi-permeable membrane from a weaker solution to a stronger solution is
known as
Atranspiration
Bdiffusion
Cactive transport
Dplasmolysis
Eosmosis
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Question 823
waec1996
Which of the following are the final products of aerobic respiration?
AWater, carbondioxide and energy
BPyruvic acid, carbondioxide and water
CGlucose, energy and urea
DEnergy and carbondioxide
ELactic acid, water and carbondioxide
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Question 824
waec1996
One of the differences between plants and animals is that
Agrowth is indefinite in animals but definite in plants
Bnutrition is autotrophic in plants but holophytic in animals
Cin plants there are excretory systems but in animals waste products are stored away
Dplants react slowly to external stimuli while animals react more quickly
Erespiration takes place in animals but does not take place in plants
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Question 825
waec1996
Which of the following is not a cell organelle?
AGolgi body
BNucleus
CFat droplets
DRibosome
EEndoplasmic reticulum
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Question 826
waec1996
A few drops of fehling’s solution was added to juice extracted from fresh maize grain and boiled. A red
recipitate was formed, indicating the presence of
Aalcohol
Bprotein
Cnon-reducing sugar
Dstarch
EEndoplasmic reticulum
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Question 827
waec1996
Which of the following levels of organisation in living things is in the correct sequence, starting from the
most complex to me simplest?
Atissue → cell → organ → system
BSystem → organ → tissue → cell
CCell → tissue → system → organ
DCell → tissue → organ → system
EOrgan → system → tissue → cell.
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Question 828
waec1995
Ultra-filtration process at the Bowman’s capsule is facilitated by
Athe volume of water in the blood
Bthe high concentration of urea in the blood of the Bowman’s capsule
Cthe differential blood pressure between the glomerulus and the Bowman’s capsule
Dthe differential blood volume between the glomerulus and the Bowman’s capsule
Eheavy weight of the urea, water, glucose and amino acids in the Bowman’s capsule.
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Question 829
waec1995
Density, mortality rate, birth rate are the factors that affect
Apopulation
Bdominance
Ccover
Dhabitat
Eabiotic community
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Question 830
waec1995
Which of the following ecological factors causes food shortage?
