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.
A characteristic feature of plant parasites is the
Apossession of holdfast
Bpossession of rhizoids
Cdevelopment of hanging roots
Ddevelopment of haustoria
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Question 682
waec2014
In a Biuret test , some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive result?
Amercurous nitrate
Bcopper sulphate
Csodium carbonate
Dsilver nitrate
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Question 683
waec2014
A meal consisting of yam and a lot of vegetables is not balanced because it does not contain
Acarbohydrates
Bproteins
Cvitamins
Dminerals
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Question 684
waec2014
The purpose of treating poor soil with lime is to increase the quantity of
Anitrogen
Bphosphorus
Ccarbohydrates
Dsulphur
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Question 685
waec2014
The amount of starch in a germinating seed decreases because the starch is used up
Afor respiration and building up of cells
Bto build cellulose cell wall
Cto develop meristematic tissues
Dfor the production of enzymes
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Question 686
waec2014
Older parts of plant roots do not normally absorb water because
Athey lack xylem
Bthey have small surface area
Cthe phloem is dead
Dthey lack root hairs
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Question 687
waec2014
An inferior ovary of a flower is situated
Abelow the floral parts
Babove the floral parts
Cat the same level with all the floral parts
Dat the centre of the floral parts
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Question 688
waec2014
The following substances pass into the blood of the foetus from the mother's blood via the placenta except
Acarbon dioxide
Bglucose
Cviruses
Dantibodies
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Question 689
waec2014
The inability to maintain proper balance of the body in humans may be due to a defect in the
Acochlea
BEuastachian tube
CSemi-circular canals
Doval window
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Question 690
waec2014
Which of the following conditions in flowering plants enhance self-pollination?
ACleistogamy
BHeterostyly
CProtandry
DProtogyny
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Question 691
waec2014
The legs of an accident victim with a fractured vertebral column and injured spinal cord could not be raised because
Aimpulses fromreceptors in the legs cannot travel to the brain
Bimpulses from the brain cannot travel to the legs
Cchemical substances will be released at synapses in the central nervous system
Dreflexx actions cannot take place in the legs
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Question 692
waec2014
Which of the following processes is not a function of the mammalian skin?
ARegulation of body temperature
BReception of external stimuli
CExcretion
DGaseous exchange
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Question 693
waec2014
Which of the following statements about asexual reproduction is correct? It
Aalways involves one parent but the offspring is genetically different from the parent.
Bmay involve two parents but the offspring is always identical to one parent
Calways involves one parent and the offspring is genetically identical to the parent
Dinvolves two parents but the offspring is not genetically identical to any of the parents
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Question 694
waec2014
The following events occur during mitosis in a cell:
I. Chromatids separate;
II. Chromosomes become visible;
III. Chromosomes align at the equator
IV. Cytoplasm divides (Cytokinesis):
The correct sequence of the events is
Alll, ll,lV,l.
Bll, lll, l,lV
Cll, l, lll, lV
DII, IV, I, III.
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Question 695
waec2014
In which of the following yam tissues will osmosis occur?
ABoiled and peeled
BRaw and peeled
CBoiled and unpeeled
DRoasted and peeled
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Question 696
waec2014
Which of the following cell inclusions can destroy other cell organelles?
ACentriole
BRibosome
CLysosome
DMitochondrion
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Question 697
waec2014
Active transport can be defined as the movement of
Asubstances from a region of high concentration to a region of low concentration
Bsubstances from a region of low concentration to a region of high concentration across a living cell membrane
Csubstances across a living cell membrane using energy from the cell
Dmovement of molecules in a medium
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Question 698
waec2014
Which of the following organisms is the most specialized ?
