Biology past questions: WAEC SSCE 2022

45 objective questions, with answers. Free to read and practise.

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45 questions, one at a time, marked as you go or at the end. No account needed.

1.
A group of organisms of the same species living in a particular place is known as
1. A.colony
2. B.ecosystem
3. C.Niche
4. D.population
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Answer: D population
2.
An accident victim was successfully transfused with blood from the father whose blood, group is AB. The blood group of the accident victim is
1. A.B
2. B.O
3. C.AB
4. D.A
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Answer: C AB
3.
An evidence of the occurrence of photosynthesis in an experiment is the?
1. A.release of carbon (IV) oxide
2. B.release of oxygen
3. C.formation of water molecules
4. D.formation and release of fructose
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Answer: B release of oxygen
4.
Diagram J is a protease while diagrams K,L,M, and N are food substances, study them and answer this question. After a reaction between protease J and the food substance, the end product would be
1. A.fatty acids
2. B.glucose
3. C.amino acids
4. D.water
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Answer: C amino acids
5.
Diagram J is a protease while diagrams K,L,M, and N are food substances, study them and answer this question. Protease J would react with the particular illustrated substance because enzymes?
1. A.k
2. B.L
3. C.M
4. D.N
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Answer: B L
6.
Diagrams X and Y above are illustrations of transverse sections of a part of plants, Study them and answer this question. The part labelled Il is the?
1. A.Pith
2. B.xylem
3. C.Phloem
4. D.endodermis
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Answer: A Pith
7.
Diagrams X and Y above are illustrations of transverse sections of a part of plants, Study them and answer this question. The part responsible for conducting water and dissolved mineral salts from the soil to the leaves is labelled
1. A.I
2. B.II
3. C.III
4. D.IV
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Answer: D IV
8.
Diagrams X and Y above are illustrations of transverse sections of a part of plants. study them and answer this question which of the following statements is not correct? Diagrams X and Y are sections of
1. A.roots
2. B.a dicotyledonous root
3. C.vascular bundies
4. D.stems
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Answer: A roots
9.
In which of the following structures is simple sugar produced?
1. A.Vacuole
2. B.Cytoplasm
3. C.Chloroplast
4. D.Cell wall
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Answer: C Chloroplast
10.
Individuals belonging to the blood group O are universal donors because ?
1. A.antigens are absent in thier blood cells
2. B.members of the group consitutute the highest number of humans
3. C.there are no of antibodies in thier blood plasma
4. D.the antigens in thier blood cells are easily destroyed
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Answer: A antigens are absent in thier blood cells
11.
Organ level of organization in living things is found in?
1. A.waterleaf plant
2. B.virus particle
3. C.kidney
4. D.spermatozoon
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Answer: C kidney
12.
Study the food chain illustrated below and use it to answer this question. J-K-L-M-N Organism J is normally sustained by energy from?
1. A.Green plants
2. B.carbohydrates
3. C.organism
4. D.sunlight
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Answer: D sunlight
13.
Study the food chain illustrated below and use it to answer this question. J-K-L-M-N The position occupied by each of organisms J K L M N in the food chain is known as the
1. A.energy level
2. B.trophic level
3. C.food web
4. D.pyramid of numbers
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Answer: B trophic level
14.
Study the food chain illustrated below and use it to answer this question. J-K-L-M-N which of the following statements about organism L is correct?
1. A.feeds on organism
2. B.is a primary consumer
3. C.is the producer
4. D.is a secondary consumer
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Answer: D is a secondary consumer
15.
The biological association that contributes directly to succession in a community is
1. A.competition
2. B.predation
3. C.parasitism
4. D.commensialism
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Answer: A competition
16.
The burning of farmlands ahould be discouraged because?
1. A.destroys organic components of the soil
2. B.increases population of wild animals
3. C.increases dormancy period of some seeds
4. D.destroys some plant seeds
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Answer: A destroys organic components of the soil
17.
The conservation of natural resources is enhanced by the following practices except
1. A.controlling farm activities
2. B.protecting endangered species
3. C.poaching in game reserves
4. D.establishing parks and gardens
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Answer: C poaching in game reserves
18.
The diagram above is an illustration of some parts of a mammalian ear. Study it and answer this question. The middle ear is connected to the pharynx by the part labelled
1. A.I
2. B.II
3. C.III
4. D.IV
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Answer: C III
19.
The diagram above is an illustration of some parts of a mammalian ear. Study it and answer this question. The parts labelled I are the?
1. A.semi circular canals
2. B.ossicles
3. C.cochlea
4. D.external auditory meatus
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Answer: B ossicles
20.
The diagram above is an illustration of some parts of a mammalian ear. Study it and answer this question. Which of the parts are correctly grouped?
1. A.(Inner ear I, IV) (Middle ear III) (Outer ear II)
2. B.(Inner ear III) (Middle ear II, IV) (Outer ear I)
3. C.(Inner ear III) (Middle ear II) (Outer ear III,IV)
4. D.(Inner ear II) (Middle ear I, III) (Outer ear IV)
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Answer: D (Inner ear II) (Middle ear I, III) (Outer ear IV)
21.
The diagram below is an illustration of an experiment on sedimentation of soil, use it to answer this question. The organic component of the soil is labelled
1. A.I
2. B.II
3. C.III
4. D.IV
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Answer: A I
22.
The diagram below is an illustration of an experiment on sedimentation of soil, use it to answer this question. The part labelled IV is
1. A.silt
2. B.sand
3. C.humus
4. D.clay
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Answer: B sand
23.
The diagrams above are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question. If the number of chromosomes in the skin cells of mammals is 46, how many chromosomes would be found in P and Q respectively?
1. A.23 and 23
2. B.23 and 46
3. C.46 and 23
4. D.46 and 46
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Answer: A 23 and 23
24.
The diagrams above are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question. Which of the following statements about P and Q is correct?
1. A.Both cells are structures for asexual reproduction
2. B.Both cells normally belong to the same individual
3. C.Both cells are found in plants
4. D.The union of both cells gives rise to a new mammal
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Answer: D The union of both cells gives rise to a new mammal
25.
The diagrams above are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question. Which parts of P and Q fuse to complete the biological process?
1. A.III and I
2. B.IV and I
3. C.III and II
4. D.IV and II
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Answer: A III and I
26.
The major source of vitamin A are ?
1. A.egg yolk, carrot and palm oil
2. B.mango, pawpaw,and eggs
3. C.sorghum,soya bean and liver
4. D.rice,bran,green vegetables and milk
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Answer: A egg yolk, carrot and palm oil
27.
The organelles in cells which are also referred to as suicidal bags are the
1. A.mithchondria
2. B.lysosomes
3. C.ribosomes
4. D.nuclei
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Answer: B lysosomes
28.
The process by which the amount of water and solutes in the blood is controlled is known as
1. A.hemolysis
2. B.diffusion
3. C.turgidity
4. D.osmoregulation
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Answer: D osmoregulation
29.
The process that brings about the shrinking of a spirogyra cell when placed in a strong solution is ?
1. A.osmosis
2. B.autolysis
3. C.plasmolysis
4. D.diffusion
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Answer: C plasmolysis
30.
The property of clayey soil that prevents it from supporting thick vegetation is its?
1. A.composition of chemically weathered granite rocks
2. B.inability to retain much water
3. C.tendency of becoming waterlogged
4. D.porosity and low water retention ability
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Answer: C tendency of becoming waterlogged
31.
The region of a plant stem in which cells divide to increase its diameter is
1. A.cambium
2. B.phloem
3. C.xylem
4. D.collenchyma
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Answer: A cambium
32.
The table above shows the effect of hormones I,II,III and IV on some parts of the human body. Where (✓) represents effects and (X) represents no effect of hormone on the corresponding part of the body. study it and answer this question. The hormone responsible for anxiety is?
1. A.I
2. B.II
3. C.III
4. D.IV
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Answer: A I
33.
The table above shows the effect of hormones I,II,III and IV on some parts of the human body. Where (✓) represents effects and (X) represents no effect of hormone on the corresponding part of the body. study it and answer this question. Which of the following hormones are l, II, Ill and IV respectively?
1. A.ADH, Glucagon, Oestrogen, Adrenaline
2. B.Adrenaline, Glucagon, Oestrogen, ADH
3. C.Glucagon,ADH, Oestrogen, Adrenaline
4. D.Adrenaline, ADH, Oestrogen, Glucagon
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Answer: D Adrenaline, ADH, Oestrogen, Glucagon
34.
The total number of caudal vertebrae in animals X and Y is 4 and 27 respectively. The animals are likely to be.
1. A.fish and human
2. B.toad and rat
3. C.toad and fish
4. D.humans and rat
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Answer: D humans and rat
35.
The use of a lighter instead of matchsticks is a way of conserving
1. A.petroleum
2. B.forest
3. C.water
4. D.wildlife
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Answer: B forest
36.
Two tall plants were crossed and all the F1 plants were tall. when the F1 plants were selfed, some of the F2 plants were tall while others were short what are the possible genotypes of the original plants ?
1. A.Tt and tt
2. B.TT and TT
3. C.tt and tt
4. D.TT and Tt
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Answer: D TT and Tt
37.
Use the following processes to answer this question. I-Ribs move upward and outward II- Diaphragm relaxes IIl-Volume of thorax increases IV-Air is forced out of the lungs Which of the processes take place during inspiration?
1. A.I and III only
2. B.II and III only
3. C.II and III only
4. D.III and IV only
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Answer: A I and III only
38.
Which of the followig traits in humans is an example of physiological variation?
1. A.skin colour
2. B.fingerprint
3. C.tongue rolling
4. D.height
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Answer: C tongue rolling
39.
Which of the following blood components has the greatest affinity for oxygen and carbon (IV) oxide?
1. A.Lymphocyte
2. B.Erythrocyte
3. C.Blood plasma
4. D.Thrombocyte
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Answer: B Erythrocyte
40.
which of the following features is not an adaptation?
1. A.Breathing roots for entry air
2. B.flowers are raised above water to attract pollinators
3. C.spongy tissues containing gases for boyancy
4. D.hairy structures on the leaves to reduce water loss
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Answer: D hairy structures on the leaves to reduce water loss
41.
which of the following practices will not maintain soil fertility?
1. A.preventing soil erosion
2. B.bush fallowing
3. C.tendency of becoming waterlogged
4. D.porosity and low water retention ability
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Answer: C tendency of becoming waterlogged
42.
which of the following statements about living things is correct?
1. A.animals respire using carbon(iv)oxide as a raw material
2. B.growth in plants is limited after some time
3. C.most plants respond to stimulus slowly
4. D.higher animals can reproduce asexually
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Answer: C most plants respond to stimulus slowly
43.
Which of the following statements about sex linked traits is not correct?
1. A.male inherit sex linked traits from thier fathers
2. B.sex linked traits are more common in males
3. C.females can be carriers beacuse they can be heterozygous for the trait
4. D.males are never carriers since they only recieve one sex chromosome
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Answer: D males are never carriers since they only recieve one sex chromosome
44.
Which of the following statements best describes a test cross?
1. A.to determine the genotype of an individual whose phenotype is to be known
2. B.to determine the phenotype of an individual whose genotype is known
3. C.between the progeny of parents to ascertain external expressions
4. D.between two homozygous recessive individuals to confirm the genotypes
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Answer: C between the progeny of parents to ascertain external expressions
45.
which of the follwing pyramids is not used in ecology? pyramid of
1. A.energy
2. B.numbers
3. C.biomass
4. D.orgsnisms
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Answer: D orgsnisms

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