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NECO 2003

2003 NECO Biology Past Questions

The 2003 NECO Biology past questions with answers: 44 objective questions from the 2003 paper in the DeeepSolve question bank, each with its answer behind "Show answer". Try each question before you check, then practise the paper as a timed NECO-style CBT.

Past questions © the examination body (JAMB/WAEC/NECO). DeeepSolve is not affiliated with them. Rights holders: see /copyright.

Questions

  1. 1.

    Herbicides are chemicals used to

    1. A.check the spread of diseases
    2. B.control dormancy in seeds
    3. C.control insects
    4. D.control weeds
    5. E.control pests
    Show answer

    Answer: D. control weeds

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  2. 2.

    Autecology is defined as the study of Interrelationship of

    1. A.many species of organisms and their environment
    2. B.same species of organisms and their environment
    3. C.organisms in the atmosphere
    4. D.organisms under the earth’s surface
    5. E.organisms in water
    Show answer

    Answer: B. same species of organisms and their environment

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  3. 3.

    Vitamin K deficiency causes

    1. A.constipation
    2. B.indigestion
    3. C.low sperm count
    4. D.uncontrolled haemorrhage
    5. E.stomach and duodenal ulcer
    Show answer

    Answer: D. uncontrolled haemorrhage

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  4. 4.

    Which practice does NOT promote the health of the community?

    1. A.burning of refuse in incinerators
    2. B.disposal of human sewage using water closets
    3. C.legislating in favour of sexual indulgence
    4. D.provision of portable pipe-borne water
    5. E.sitting of industries downstream away from habitations
    Show answer

    Answer: C. legislating in favour of sexual indulgence

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  5. 5.

    Which of the following factors affect population?

    1. A.competition and natality rate
    2. B.heat and space
    3. C.food and mortality rate
    4. D.Space and competition
    5. E.Water and light
    Show answer

    Answer: C. food and mortality rate

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  6. 6.

    The following are courtship behaviors in animals EXCEPT

    1. A.copulation
    2. B.display
    3. C.pairing
    4. D.seasonal migration
    5. E.territoriality
    Show answer

    Answer: A. copulation

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  7. 7.

    Which of the following is NOT a plant hormone?

    1. A.Abscissic acid
    2. B.Auxin
    3. C.Cytokinin
    4. D.Cytochrome
    5. E.Gibberellins
    Show answer

    Answer: D. Cytochrome

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  8. 8.

    The biosphere can best be defined as part of the

    1. A.atmosphere that contains moisture
    2. B.earth that contains gases
    3. C.earth that is liquid
    4. D.earth that supports life
    5. E.ocean that supports life
    Show answer

    Answer: D. earth that supports life

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  9. 9.

    The respiratory structures of insects are

    1. A.body surfaces
    2. B.gills
    3. C.kidneys
    4. D.lung
    5. E.tracheae
    Show answer

    Answer: E. tracheae

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  10. 10.

    Which of the following organisms possesses both plant and animal characteristics?

    1. A.Amoeba
    2. B.Euglena
    3. C.Paramecium
    4. D.Spirogyra
    5. E.Volvox
    Show answer

    Answer: B. Euglena

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  11. 11.

    i 2/2, c 1/1, pm 2/2, m 3/3 The above dental formula represents the dentition of

    1. A.cow
    2. B.dog
    3. C.man
    4. D.rabbit
    5. E.sheep
    Show answer

    Answer: C. man

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  12. 12.

    Which of the organisms is a primary consumer?

    1. A.Cassava
    2. B.Grasshopper
    3. C.Hawk
    4. D.Lizard
    5. E.Toad
    Show answer

    Answer: B. Grasshopper

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  13. 13.

    A population can be referred to as the number of

    1. A.adult organisms in an ecosystem
    2. B.female species in an ecosystem
    3. C.male species in an ecosystem
    4. D.organisms of same species in an ecosystem
    5. E.organisms that can withstand harsh conditions
    Show answer

    Answer: D. organisms of same species in an ecosystem

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  14. 14.

    The excretory organ of earthworms is known as

    1. A.contractile vacuole
    2. B.flame cell
    3. C.malphigian tubule
    4. D.nephridium
    5. E.kidney
    Show answer

    Answer: D. nephridium

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  15. 15.

    A flower made up of one carpel is referred to as

    1. A.apocarpous
    2. B.monocarpus
    3. C.monogamous
    4. D.pericarpus
    5. E.Syncarpous
    Show answer

    Answer: B. monocarpus

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  16. 16.

    Here is a list of natural resources: I. Wildlife II. Forest III. Fossil fuel IV. Minerals Which of the natural resources are non-renewable?

    1. A.I and II only
    2. B.I and III only
    3. C.I and IV only
    4. D.II and III only
    5. E.III and IV only
    Show answer

    Answer: E. III and IV only

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  17. 17.

    Sneezing in man is controlled by?

    1. A.cerebellum
    2. B.cerebrum
    3. C.hypothalamus
    4. D.pineal body
    5. E.medulla oblongata
    Show answer

    Answer: E. medulla oblongata

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  18. 18.

    Which of the following is NOT a function of dilute hydrochloric acid secreted in the stomach of man?

    1. A.acidities the contents
    2. B.activates pepsin
    3. C.inactivates pepsin
    4. D.inactivates ptyalin
    5. E.kills micro organisms
    Show answer

    Answer: C. inactivates pepsin

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  19. 19.

    The organelle responsible for the transportation of substances within the cell is

    1. A.cell membrane
    2. B.chloroplast
    3. C.endoplasmic reticulum
    4. D.lysosome
    5. E.mitochondrion
    Show answer

    Answer: C. endoplasmic reticulum

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  20. 20.

    Which of the following is NOT true of enzymes?

    1. A.Their reactions are reversible
    2. B.Their reactions are irreversible
    3. C.They remain unchanged after the reaction
    4. D.They are affected by high temperatures
    5. E.They have active sites
    Show answer

    Answer: B. Their reactions are irreversible

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  21. 21.

    Which of the following factors affects enzyme activity?

    1. A.Atmospheric pressure
    2. B.oxygen
    3. C.carbondioxide
    4. D.temperature
    5. E.Rainfall
    Show answer

    Answer: D. temperature

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  22. 22.

    The following are effects of food shortage on population size EXCEPT

    1. A.competition
    2. B.decline in reproduction
    3. C.emigration
    4. D.increase in natality
    5. E.mortality
    Show answer

    Answer: D. increase in natality

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  23. 23.

    Thrombocytes are responsible for

    1. A.blood clotting
    2. B.digestion of food
    3. C.ingestion of bacteria
    4. D.transportation of digested food
    5. E.transportation of dissolved oxygen
    Show answer

    Answer: A. blood clotting

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  24. 24.

    Which of the following is NOT a function of the mammalian skin?

    1. A.detoxication
    2. B.excretion
    3. C.production of vitamin D
    4. D.protection
    5. E.temperature control
    Show answer

    Answer: A. detoxication

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  25. 25.

    Which of the following plant products can be used to confirm that photosynthesis has taken place?

    1. A.glucose
    2. B.fats
    3. C.protein
    4. D.starch
    5. E.vitamins
    Show answer

    Answer: D. starch

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  26. 26.

    Which of the following is an example of a multiple fruit?

    1. A.cashew
    2. B.maize
    3. C.mango
    4. D.orange
    5. E.pineapple
    Show answer

    Answer: E. pineapple

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  27. 27.

    The rate of transpiration of a leafy shoot can be measured with

    1. A.anemometer
    2. B.barometer
    3. C.photometer
    4. D.potometer
    5. E.thermometer
    Show answer

    Answer: D. potometer

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  28. 28.

    The function of digestive enzymes is to

    1. A.acidify food
    2. B.build up food
    3. C.emulsify fats
    4. D.quicken absorption
    5. E.enhance food breakdown
    Show answer

    Answer: E. enhance food breakdown

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  29. 29.

    Chromosomes are found in the

    1. A.cell membrane
    2. B.centriole
    3. C.mitochondrion
    4. D.nucleus
    5. E.lysosome
    Show answer

    Answer: D. nucleus

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  30. 30.

    The sun rays reach the earth’s surface by

    1. A.conduction
    2. B.convection
    3. C.radiation
    4. D.reflection
    5. E.refraction
    Show answer

    Answer: C. radiation

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  31. 31.

    Which of the following is an immediate source of energy to man?

    1. A.Beans
    2. B.Butter
    3. C.Egg
    4. D.Orange
    5. E.Plantain
    Show answer

    Answer: E. Plantain

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  32. 32.

    The tip of the tongue is sensitive to

    1. A.bitter taste
    2. B.salty taste
    3. C.sweet taste
    4. D.salty and sweet taste
    5. E.sour taste
    Show answer

    Answer: C. sweet taste

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  33. 33.

    The following are major groups of the plant kingdom EXCEPT

    1. A.Bryophyta
    2. B.Chiorophyta
    3. C.Pteridophyta
    4. D.Spermatophyta
    5. E.Thallophyta
    Show answer

    Answer: B. Chiorophyta

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  34. 34.

    Which of the following is NOT a family planning method?

    1. A.abstinence
    2. B.contraceptive device
    3. C.masturbation
    4. D.sterilization
    5. E.use of condoms
    Show answer

    Answer: C. masturbation

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  35. 35.

    Here is a list of natural resources: I. Wildlife II. Forest III. Fossil fuel IV. Minerals Which of the natural resources are renewable?

    1. A.I and IV
    2. B.II and III
    3. C.I and II
    4. D.I and III
    5. E.I, II, III and IV
    Show answer

    Answer: C. I and II

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  36. 36.

    When a plant shows reddish leaves, the soil is deficient in

    1. A.calcium
    2. B.iron
    3. C.nitrogen
    4. D.phosphorus
    5. E.sulphur
    Show answer

    Answer: D. phosphorus

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  37. 37.

    Translocation of food substances in plants takes place through

    1. A.collenchyma
    2. B.parenchyma
    3. C.phloem
    4. D.sclerenchyma
    5. E.xylem
    Show answer

    Answer: C. phloem

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  38. 38.

    Which of the following is a liver disease?

    1. A.diuresis
    2. B.dropsy
    3. C.hepatitis
    4. D.nephritis
    5. E.oedema
    Show answer

    Answer: C. hepatitis

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  39. 39.

    The axial skeleton is made up of

    1. A.fore and hind limbs
    2. B.limbs and limb girdles
    3. C.ribs and sternum
    4. D.skull and limbs
    5. E.skull and spine
    Show answer

    Answer: E. skull and spine

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  40. 40.

    The association between guinea worm and tissues of man is called

    1. A.commensalism
    2. B.parasitism
    3. C.predation
    4. D.Saprophytism
    5. E.Symbiosis
    Show answer

    Answer: B. parasitism

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  41. 41.

    The bee that lays eggs in a hive is called

    1. A.broiler
    2. B.drone
    3. C.layer
    4. D.queen
    5. E.worker
    Show answer

    Answer: D. queen

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  42. 42.

    Which of the following instruments is used for measuring the speed of wind?

    1. A.anemometer
    2. B.barometer
    3. C.hygrometer
    4. D.manometer
    5. E.windvane
    Show answer

    Answer: A. anemometer

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  43. 43.

    The process by which some organisms oxidize inorganic compounds to obtain energy is known as

    1. A.catabolism
    2. B.chemosynthesis
    3. C.glycolysis
    4. D.metabolism
    5. E.photosynthesis
    Show answer

    Answer: B. chemosynthesis

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  44. 44.

    Which of the following is NOT an excretory organ?

    1. A.Heart
    2. B.Kidney
    3. C.Liver
    4. D.Lung
    5. E.Skin
    Show answer

    Answer: A. Heart

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