2010 JAMB Biology Past Questions

Questions

1. 1.

   Which of the following stimuli is likely to elicit a nastic response in an organism?

   1. A.Wound lesion
   2. B.Light intensity
   3. C.Chemical substances
   4. D.Gravity

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   Answer: B. Light intensity

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2. 2.

   The loss of soil through erosion can be reduced by?

   1. A.watering
   2. B.crop rotation
   3. C.manuring
   4. D.irrigation

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   Answer: B. crop rotation

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3. 3.

   The two halves of the pelvic girdle are joined together at the?

   1. A.pubic symphysis
   2. B.ilium
   3. C.pubis
   4. D.obturator foramen

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   Answer: A. pubic symphysis

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4. 4.

   The mode of nutrition of sun dew and bladder wort can be described as?

   1. A.saprophytic
   2. B.holozoic
   3. C.chemosynthetic
   4. D.autotrophic

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   Answer: D. autotrophic

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5. 5.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

6. 6.

   The chromosome number of a cell before and after the process of meiosis is conventionally represented as?

   1. A.2n → 2n
   2. B.n → n
   3. C.n → 2n
   4. D.2n → n

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   Answer: D. 2n → n

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7. 7.

   Mycorrhiza promote plant growth by?

   1. A.absorbing inorganic ions from the soil
   2. B.protecting it from infection
   3. C.helping it to utilize atmospheric nitrogen
   4. D.serving as a growth regulator

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   Answer: A. absorbing inorganic ions from the soil

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8. 8.

   The activity of an organism which affects the survival of another organism in the same habitat constitutes?

   1. A.an edaphic factor
   2. B.an abiotic factor
   3. C.a biotic factor
   4. D.a physiographic factor

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   Answer: C. a biotic factor

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9. 9.

   If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is?

   1. A.$\frac{1}{2}$
   2. B.$\frac{3}{4}$
   3. C.$\frac{1}{4}$
   4. D.1

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   Answer: C. $\frac{1}{4}$

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10. 10.

    Yeast respires anaerobically to convert simple sugar to carbon (IV) oxide and?

    1. A.alcohol
    2. B.acid
    3. C.oxygen
    4. D.water

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    Answer: A. alcohol

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11. 11.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

12. 12.

    A dilute solution of phenylthiocarbamide tastes bitter to some people and is tasteless to others. This is an example of?

    1. A.taste bud variation
    2. B.discontinuous variation
    3. C.morphological variation
    4. D.continuous variation

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    Answer: B. discontinuous variation

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13. 13.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

14. 14.

    The protozoan plasmodium falciparum is transmitted by?

    1. A.female Anopheles mosquitoes
    2. B.female Aedes mosquitoes
    3. C.female Culex mosquitoes
    4. D.Female blackfly

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    Answer: A. female Anopheles mosquitoes

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15. 15.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

16. 16.

    Which of the following is lacking in the diet of a person with kwashiorkor?

    1. A.proteins
    2. B.carbohydrates
    3. C.minerals
    4. D.vitamins

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    Answer: A. proteins

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17. 17.

    The barrier between maternal and fetal blood is the?

    1. A.placenta
    2. B.liver
    3. C.umbilical cord
    4. D.uterine wall

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    Answer: A. placenta

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18. 18.

    Low annual rainfall, sparse vegetation , high diurnal temperatures and cold nights are characteristic features of the?

    1. A.tropical rainforest
    2. B.desert
    3. C.montane forest
    4. D.guinea savanna

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    Answer: B. desert

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19. 19.

    A pair of genes that control a trait is referred to as?

    1. A.an allele
    2. B.recessive
    3. C.dominant
    4. D.a hybrid

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    Answer: A. an allele

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20. 20.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

21. 21.

    At what stage in the life history of a mammal is the sex of an individual set?

    1. A.at adolescence
    2. B.at puberty
    3. C.at birth
    4. D.at conception

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    Answer: D. at conception

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22. 22.

    The part of the human gut that has an acidic content is the?

    1. A.stomach
    2. B.duodenum
    3. C.ileum
    4. D.colon

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    Answer: A. stomach

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23. 23.

    The primary structure responsible for pumping blood for circulation through the mammalian circulatory systems is the?

    1. A.veins
    2. B.right auricle
    3. C.arteries
    4. D.left ventricle

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    Answer: D. left ventricle

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24. 24.

    The oily substance that lubricates the mammalian hair to keep it flexible and water repellent is secreted by the?

    1. A.sweat glands
    2. B.sebaceous glands
    3. C.fatty cells
    4. D.granular layer

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    Answer: B. sebaceous glands

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25. 25.

    Which of the following groups of cells is devoid of true nuclei?

    1. A.algae
    2. B.monera
    3. C.fungi
    4. D.viruses

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    Answer: B. monera

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26. 26.

    I. Adoption of appropriate nocturnal habits ll. Burrowing lll. Adjusting their internal body temperature. IV Possession of many sweat pores. Which of the above are ways in which desert animals adapt to extreme heat of the environment?

    1. A.I and IV only
    2. B.ll and lll only
    3. C.l and ll only
    4. D.l, ll and lll only

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    Answer: C. l and ll only

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27. 27.

    Which of the following is NOT a function of the nucleus of a cell?

    1. A.it translates genetic information for the manufacture of proteins
    2. B.it stores and carries hereditary information
    3. C.it is reservoir of energy for the cell
    4. D.it controls the life processes of the cell

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    Answer: C. it is reservoir of energy for the cell

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28. 28.

    The dominant phase in the life cycle of a fern is the?

    1. A.prothallus
    2. B.sporophyte
    3. C.antheridium
    4. D.gametophyte

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    Answer: B. sporophyte

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29. 29.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

30. 30.

    The outer layer of the kidney where the Bowman's capsules are found is the?

    1. A.cortex
    2. B.pelvis
    3. C.medulla
    4. D.pyramid

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    Answer: A. cortex

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31. 31.

    The flippers of a whale and the fins of a fish are examples of?

    1. A.divergent evolution
    2. B.coevolution
    3. C.continous variation
    4. D.convergent evolution

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    Answer: D. convergent evolution

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32. 32.

    The vector for yellow fever is?

    1. A.Aedes mosquito
    2. B.Anopheles mosquito
    3. C.tsetse fly
    4. D.blackfly

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    Answer: A. Aedes mosquito

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33. 33.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

34. 34.

    Chemosynthetic organisms are capable of manufacturing their food from simple inorganic substances through the process of?

    1. A.oxidation
    2. B.denitrification
    3. C.reduction
    4. D.phosphorylation

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    Answer: A. oxidation

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35. 35.

    If a child can receive blood from all donors, he belongs to the blood group?

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

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    Answer: B. AB

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36. 36.

    The average number of individuals of a species per unit area of the habitat is the?

    1. A.population density
    2. B.population frequency
    3. C.population size
    4. D.population distribution

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    Answer: A. population density

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37. 37.

    When a mixture of a food substance and Benedict's solution was warmed, the solution changed from blue to brick-red. This indicates the presence of?

    1. A.reducing sugar
    2. B.fatty acid
    3. C.sucrose
    4. D.amino acid

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    Answer: A. reducing sugar

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38. 38.

    Which of the following is true of the transverse section of a dicot stem?

    1. A.the xylem is more interiorly located than the phloem
    2. B.the cambium lies between the cortex and the vascular bundles
    3. C.the vascular bundles are randomly scattered within the cortex
    4. D.the epidemis is completely encircled by the cortex

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    Answer: A. the xylem is more interiorly located than the phloem

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39. 39.

    Which of the following organisms is mainly found in the marine habitat?

    1. A.Achatina
    2. B.Tilapia
    3. C.Dog fish
    4. D.Tortoise

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    Answer: C. Dog fish

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40. 40.

    Circulation of blood to all parts of the body except the lungs is through?

    1. A.the pulmonary artery
    2. B.systemic circulation
    3. C.the lymphatic system
    4. D.pulmonary circulation

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    Answer: B. systemic circulation

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41. 41.

    I. Stomata → Spirogyra II. Alveoli → Earthworm III. Malpighian tubule → Mammal IV. Contractile vacuole → Protozoa. Which of the above structures is correctly matched with the organisms in which it is found?

    1. A.lll
    2. B.ll
    3. C.l
    4. D.IV

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    Answer: D. IV

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42. 42.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

43. 43.

    Parental care is exhibited by?

    1. A.snails
    2. B.earthworms
    3. C.birds
    4. D.toads

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    Answer: C. birds

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44. 44.

    A food chain always begins with a?

    1. A.consumer
    2. B.decomposer
    3. C.producer
    4. D.primary consumer

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    Answer: C. producer

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45. 45.

    In the male reproductive system of a mammal, sperm is stored in the?

    1. A.van deferens
    2. B.urethra
    3. C.epididymis
    4. D.seminiferous tubules

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    Answer: C. epididymis

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46. 46.

    Thyroxine and adrenalin are examples of hormones which control?

    1. A.blood grouping
    2. B.tongue rolling
    3. C.behavioural patterns
    4. D.colour variation

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    Answer: C. behavioural patterns

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47. 47.

    The sheet of muscle that separates the thoracic and the abdominal cavities is the?

    1. A.diaphragm
    2. B.intercostal muscle
    3. C.pleural memberane
    4. D.pericardium

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    Answer: A. diaphragm

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48. 48.

    The blood component that has the greatest affinity for oxygen is the?

    1. A.lymphocytes
    2. B.leucocytes
    3. C.erythrocytes
    4. D.thrombocytes

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    Answer: C. erythrocytes

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49. 49.

    The main distinguishing features between the soldier termite and other members of the caste are the?

    1. A.presence of wings, possession of a small head and large thorax
    2. B.presence of wings, possession of a large thorax and a small head
    3. C.absence of wings, possession of strong mandibles and a large head
    4. D.absence of wings,possession of big head and the absence of mandible

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    Answer: C. absence of wings, possession of strong mandibles and a large head

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