2022 JAMB Biology Past Questions and Answers

Questions

1. 1.

   The growth of mucor on a piece of bread is?

   1. A.scavenging
   2. B.commensalism
   3. C.autotrophism
   4. D.saprophytism

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   Answer: D. saprophytism

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2. 2.

   The display of male agama lizard is to?

   1. A.scare predators
   2. B.regulate body temperature
   3. C.attract female for mate
   4. D.give invite to intruders

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   Answer: C. attract female for mate

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3. 3.

   The sum total of all observable features of an organism is?

   1. A.phenotype
   2. B.heterozygous
   3. C.genotype
   4. D.homozygous

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   Answer: A. phenotype

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4. 4.

   One of the functions of water in seed germination is to?

   1. A.dilute the embryo
   2. B.make the soil wet and soft
   3. C.activate the enzymes
   4. D.promote aerobic respiration

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   Answer: C. activate the enzymes

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5. 5.

   An ecological instrument used to measure wind direction is?

   1. A.Secchi disc
   2. B.wind vane
   3. C.anemometer
   4. D.slope gauge

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   Answer: B. wind vane

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6. 6.

   Petaloid sepals serve the function of?

   1. A.carrying out photosynthesis
   2. B.attracting pollinating agents to a flower
   3. C.retaining pollen grains in the corolla tubes
   4. D.protecting the inner floral parts of the flower

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   Answer: B. attracting pollinating agents to a flower

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7. 7.

   Succession that occurs on an abandoned farm land is?

   1. A.tertiary
   2. B.secondary
   3. C.primary
   4. D.climax

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   Answer: B. secondary

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8. 8.

   Gaseous exchange in annelids is more advanced and efficient compared to flatworms because?

   1. A.the cells of their epidermis have no blood capillaries
   2. B.they have well developed respiratory structures
   3. C.their cylindrical shape gives high surface area to volume ratio
   4. D.their surface area to volume ratio is very low

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   Answer: B. they have well developed respiratory structures

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9. 9.

   The genes crossing over occurs during?

   1. A.fertilization
   2. B.mutation
   3. C.mitosis
   4. D.meiosis

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   Answer: D. meiosis

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10. 10.

    The beak structure of the organism is best adapted for?

    1. A.pecking grass
    2. B.killing and picking fish
    3. C.pecking woods
    4. D.sucking nectars

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    Answer: C. pecking woods

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11. 11.

    Lack of nucleus is a feature in?

    1. A.osteocyte
    2. B.neurone
    3. C.erythrocyte
    4. D.leucocyte

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    Answer: C. erythrocyte

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12. 12.

    The internal structure of a leaf that has larger air space is?

    1. A.palisade mesophyll
    2. B.epidermis
    3. C.spongy mesophyll
    4. D.vascular bundles

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    Answer: C. spongy mesophyll

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13. 13.

    The type of fruit that is formed from a single flower having several free carpels is?

    1. A.indehiscent fruit
    2. B.aggregate fruit
    3. C.simple fruit
    4. D.fleshy fruit

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    Answer: B. aggregate fruit

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14. 14.

    In Nigeria, Southern Guinea Savanna is found in?

    1. A.Borno and Sokoto
    2. B.Kogi and Kwara
    3. C.Kaduna and Cross River
    4. D.Kano and Niger

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    Answer: B. Kogi and Kwara

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15. 15.

    Which of the following is associated with the dark stage of photosynthesis?

    1. A.Assimilation of Carbon(IV)oxide
    2. B.Photophosphorylation
    3. C.Photolysis
    4. D.Excitation of chlorophyll

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    Answer: A. Assimilation of Carbon(IV)oxide

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16. 16.

    The part that performs urinogenital function in the male reproductive system is the?

    1. A.seminal vesacle
    2. B.epididymis
    3. C.urethra
    4. D.ureter

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    Answer: C. urethra

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17. 17.

    The under secretion of thyroxine in children results in?

    1. A.goitre
    2. B.gigantism
    3. C.kwashiorkor
    4. D.cretinism

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    Answer: D. cretinism

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18. 18.

    The organism above is?

    1. A.chlamydomonas
    2. B.algae
    3. C.volvox
    4. D.euglena

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    Answer: A. chlamydomonas

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19. 19.

    The development of big muscles by a wrestler is an example of?

    1. A.acquired characteristics
    2. B.inherited characteristics
    3. C.mutation
    4. D.atrophication

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    Answer: A. acquired characteristics

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20. 20.

    The body of a snail is divided into head?

    1. A.thorax and abdomen
    2. B.visceral mass and abdomen
    3. C.thorax and foot
    4. D.visceral mass and foot

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    Answer: D. visceral mass and foot

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21. 21.

    The end product of the digestion of carbohydrate is?

    1. A.amino acid
    2. B.glycerol
    3. C.glucose
    4. D.sucrose

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    Answer: C. glucose

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22. 22.

    The movement of sugars from the leaf to other parts of plant is?

    1. A.guttation
    2. B.transpiration
    3. C.transportation
    4. D.translocation

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    Answer: D. translocation

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23. 23.

    Tall trees with buttress roots and evergreen leaves are characteristics features of?

    1. A.temperate grass land
    2. B.Southern Guinea Savanna
    3. C.tropical rain forests
    4. D.Northern Guinea savanna

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    Answer: C. tropical rain forests

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24. 24.

    In genetic counseling, a man with hemoglobin  formation HbA HbS is most preferred to marry a woman of?

    1. A.HbA HbA
    2. B.HbC HbH
    3. C.HbM HbF
    4. D.HbS HbS

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    Answer: A. HbA HbA

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25. 25.

    Pentadactyl plan of the fore limbs of frog, bird, horse, whale and man is a proof of?

    1. A.spontaneous generation
    2. B.evolution
    3. C.locomotion
    4. D.creation

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    Answer: B. evolution

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26. 26.

    The feeding relationship that exists between a tick and a cow is?

    1. A.parasitism
    2. B.mechanism
    3. C.saprophytism
    4. D.commensalism

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    Answer: A. parasitism

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27. 27.

    The waste product of insects is?

    1. A.uric acid
    2. B.urine
    3. C.Mucilage
    4. D.sweat

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    Answer: A. uric acid

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28. 28.

    A universal recipient of blood belongs to blood group?

    1. A.O
    2. B.AB
    3. C.B
    4. D.A

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    Answer: B. AB

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29. 29.

    An example of arboreal animal is?

    1. A.squirrels
    2. B.duck
    3. C.pig
    4. D.rat

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    Answer: A. squirrels

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30. 30.

    Conversion of atmosphere carbon into chemical bond energy occurs during the process of?

    1. A.transpiration
    2. B.photosynthesis
    3. C.digestion
    4. D.respiration

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    Answer: B. photosynthesis

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31. 31.

    The system of classification in which there are seven hierarchies from kingdom to species was introduced by?

    1. A.Felix Dujardin
    2. B.Carolus Linneus
    3. C.Theodore Schwann
    4. D.Charles Darwin

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    Answer: B. Carolus Linneus

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32. 32.

    The structure that joins the two strands of a chromosome together is the?

    1. A.spindle
    2. B.cellulose
    3. C.centromere
    4. D.chromatid

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    Answer: C. centromere

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33. 33.

    An adaptive feature of camel to the desert is?

    1. A.ability to increase sweat production
    2. B.ability to pass high amount of urine
    3. C.ability to tolerate low degree of dehydration
    4. D.ability to tolerate high degree of dehydration

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    Answer: D. ability to tolerate high degree of dehydration

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34. 34.

    The components of blood in man are?

    1. A.red blood cells, white blood cells, plasma and water
    2. B.red blood cells, white blood cells, and plasma
    3. C.red blood cells, white blood cells, and platelets
    4. D.red blood cells, white blood cells, plasma and platelets

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    Answer: D. red blood cells, white blood cells, plasma and platelets

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35. 35.

    During mitosis, the stage at which chromosomes lines up around the equator is?

    1. A.telophase
    2. B.metasphase
    3. C.anaphase
    4. D.prophase

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    Answer: B. metasphase

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36. 36.

    When a colour blind woman marries a normal man, what is the probability of their son being colour blind?

    1. A.25%
    2. B.100%
    3. C.50%
    4. D.0%

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    Answer: B. 100%

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37. 37.

    The part labelled II is?

    

    1. A.pellicle
    2. B.cytoplasmic connections
    3. C.flagella
    4. D.cells

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    Answer: B. cytoplasmic connections

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38. 38.

    The part of mammalian skin that excretes metabolic wastes is?

    1. A.sweat gland
    2. B.horny layer
    3. C.Malpighian layer
    4. D.sebaceous gland

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    Answer: A. sweat gland

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39. 39.

    sources of air pollutants are?

    1. A.industrial chimneys, burning fossil oils and river dams
    2. B.sulphurdioxide, acid rain and pesticides
    3. C.sulphur dioxide, vehicle exhausts, and aerosols
    4. D.sewage,smoke and old vehicles

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    Answer: C. sulphur dioxide, vehicle exhausts, and aerosols

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40. 40.

    An adaptation for defense in animals is?

    1. A.croaking of a male toad
    2. B.basking in lizard
    3. C.spines in porcupine fish
    4. D.huddling together of penguins

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    Answer: C. spines in porcupine fish

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41. 41.

    The correct pathway for blood flow from the heart to the tissues of mammals is?

    1. A.heart-arteriole-artery-tissues
    2. B.heart-artery-arteriole-tissues
    3. C.heart-vein-venule-tissues
    4. D.heart-venule-vein-tissues

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    Answer: B. heart-artery-arteriole-tissues

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42. 42.

    The movement of Euglena towards the source of light is a?

    1. A.tropic movement
    2. B.tactic movement
    3. C.nastic movement
    4. D.kinetic movement

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    Answer: B. tactic movement

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