Biology Past Questions

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62 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10
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Past Questions

62 questions
Question 1 of 20 62 total questions
Question 1
waec 2012

 

Female reproductive system Diagram | Quizlet

In the diagram, the function of the part labelled 2 is to?

Aproduce egg cells
Bprotect sperms during fertilization
Csecrete hormones during coitus
Dprotect the developing embryo
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Question 2
waec 2012

In the diagram, the arrow labelled II represents the

Arelease of oxygen
Bintake of carbon (IV) oxide
Cmovement of photosynthates
Dmovement of nutrients
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Question 3
waec 2012
Which of the following sequences is the correct evolutionary trend in plants?
AAlgae → liverworts → mosses → ferns
BLiverworts → mosses → ferns → algae
Cmosses → algae → ferns → liverworts
DFerns → Liverworts → mosses → algae
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Question 4
waec 2012
Bees are of great importance to the farmer because they
Aprovide him with honey
Bpollinate flowers
Csting crop pests to death
Ddestroy flowers by sucking nectar from them
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Question 5
waec 2012
What name is given to a sudden change in a gene or chromosome?
AAllele
BGenotype
CMutation
DPhenotype
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Question 6
waec 2012

Two yellow-flowered hybrid plants each carrying a recessive factor for flowers with green colour were crossed.
Which of the following ratios shows the correct proportion of offspring that have green flowers?

A2 in 2
B1 in 3
C1 in 4
D1 in 5
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Question 7
waec 2012
In a case of complete dominance, what is the phenotypic ratio of the cross Bb X Bb; where B =black and b = white?
A1 black : 1 grey : 2 whites
B1 black : 3 whites
C1 black : 2 blues : 1 white
D3 blacks : 1 white
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Question 8
waec 2012
In the structure of DNA, which of the following statements is true?
AThe double helix are held together by covalent bonds
BNucleotide is made up of ribose, phosphate and an organic nitrogen compound
CGuanine is the opposite of cytosine
DAdenine is the opposite of cytosine
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Question 9
waec 2012

Two plants with red flowers were back crossed, which of the following results indicate that the plants are heterozygous
red flowers, where red flowers are dominant?

A75% red and 25% white
B50% red and 50% white
C100% white
D100% red
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Question 10
waec 2012
Which of the following diseases is transmittable through genes?
AHIV /AIDS
BSickle cell anaemia
CDiabetes
DPresbyopia
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Question 11
waec 2012
The classes of fingerprints in man are
Awhorl, alternate, opposite and compound
Bcompound, loop, whorl! and alternate
Cwhorl, arch, compound and loop
Darch, simple, compound and opposite
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Question 12
waec 2012
Which of the following statements is true about the ABO blood group system?
AAntigens are located on the surface of white blood cells
BAntibodies are located in the blood plasma
CAntibodies are located on the surface of red blood cells
DAntigens are located in the blood plasma
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Question 13
waec 2012
The following pairs of traits are examples of continuous and discontinuous variations respectively except
Aeye Colour and body weight,
Bheight and blood group
Cskin colour and fingerprints
Dbodyweight and tongue rolling.
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Question 14
waec 2012
The primary cause of species endangerment is
Adisappearing habitats
Bincrease in temperatures
Cacid rain
Dexposure to hazardous wastes
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Question 15
waec 2012

Which of the following factors would be least likely to act as a density dependent limiting factor in a population of
mice?

ABuildup of waste products
BPredation
CParasitism
DUnfavourable climate
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Question 16
waec 2012

The detection of vibro cholera in public drinking water is a sign of

Aclean water
Boutbreak of disease
Cwater pollution.
Ddecayed organisms in the water
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Question 17
waec 2012
The use of water closet and septic tanks is preferred to the use of
bucket and pit latrines because
Ait is cost effective
Bcontaminated faeces are completely kept away from flies
Cthe water for flushing contains chlorine which kills the germs
DIt prevents flies from breeding
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Question 18
waec 2012
Which of the following factors exerts a major effect on the distribution of living organisms in the habitat?
ASalt
BpH
CLight
DRainfall
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Question 19
waec 2012
In which of the zones can very few organisms be found
AI
BII
CIII
DIV
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Question 20
waec 2012
Plants with breathing roots are characteristic features of vegetation in
Atropical grassland
Btemperate grassland
Csaltwater swamp
DTropical rain forest
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