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NECO 2005

2005 NECO Biology Past Questions

The 2005 NECO Biology past questions with answers: 44 objective questions from the 2005 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.

    Which of the following organisms maintains a fairly constant body temperature?

    1. A.Chicken
    2. B.Fish
    3. C.Lizard
    4. D.Toad
    5. E.Snake
    Show answer

    Answer: A. Chicken

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  2. 2.

    The practice of growing more than one type of crop on the same plot of land is called

    1. A.continuous cropping
    2. B.crop rotation
    3. C.mixed cropping
    4. D.mixed farming
    5. E.subsistence farming
    Show answer

    Answer: C. mixed cropping

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  3. 3.

    Which of these statements best defines pyramid of energy?

    1. A.energy flow from one tropic level to another
    2. B.energy flow from one habitat to another
    3. C.the amount of energy in a given area
    4. D.the loss of energy from one organism to another
    5. E.the rate of energy flow in an area
    Show answer

    Answer: A. energy flow from one tropic level to another

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  4. 4.

    The number of chromosomes in a gamete is represented by

    1. A.n
    2. B.2n
    3. C.4n
    4. D.23n
    5. E.46n
    Show answer

    Answer: A. n

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  5. 5.

    An organism with identical allelic genes is described as

    1. A.dihybrid
    2. B.heterozygous
    3. C.homozygous
    4. D.monohybrid
    5. E.recessive
    Show answer

    Answer: C. homozygous

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  6. 6.

    The medium of transportation in higher plants is

    1. A.cell sap
    2. B.cytoplasm fluid
    3. C.phloem
    4. D.water
    5. E.xylem
    Show answer

    Answer: B. cytoplasm fluid

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  7. 7.

    Which of the following fruits is an example of a caryopsis?

    1. A.Cashew nut
    2. B.Cornbretum
    3. C.Maize
    4. D.Orange
    5. E.Tridax
    Show answer

    Answer: C. Maize

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  8. 8.

    The following parts of the ear are involved in hearing EXCEPT

    1. A.auditory meatus
    2. B.cochlea
    3. C.eardrum
    4. D.eustachian tube
    5. E.ossicles
    Show answer

    Answer: D. eustachian tube

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  9. 9.

    Autotrophs include all the following EXCEPT

    1. A.chemosynthetic bacteria
    2. B.diatoms
    3. C.green plants
    4. D.phytoplankton
    5. E.zooplankton
    Show answer

    Answer: E. zooplankton

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  10. 10.

    Birds excrete nitrogenous wastes in form of

    1. A.ammonia
    2. B.sweat
    3. C.urea
    4. D.uric acid
    5. E.urine
    Show answer

    Answer: D. uric acid

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  11. 11.

    Which of the following does NOT influence plant growth?

    1. A.Light
    2. B.Nutrients
    3. C.Temperature
    4. D.Vitamins
    5. E.Water
    Show answer

    Answer: D. Vitamins

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

  13. 13.

    The following are ways of caring for the mammalian skin EXCEPT

    1. A.eating balanced diet
    2. B.exposing the skin to adequate sunlight
    3. C.using skin toning creams
    4. D.using moisturising creams to prevent drying
    5. E.washing the skin with clean water and soap
    Show answer

    Answer: C. using skin toning creams

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  14. 14.

    Which of the following is NOT a type of exoskeleton?

    1. A.Cartilage
    2. B.Chitin
    3. C.Hoot
    4. D.Nail
    5. E.Shell
    Show answer

    Answer: A. Cartilage

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  15. 15.

    A waterlogged habitat with low light penetration and very low quantity of dissolved oxygen best describes a/an habitat

    1. A.estuarine
    2. B.marine
    3. C.sahel savanna
    4. D.swampy
    5. E.tropical rainforest
    Show answer

    Answer: D. swampy

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  16. 16.

    Which of these nitrogenous bases is NOT a part of RNA?

    1. A.Adenine
    2. B.Cytosine
    3. C.Guanine
    4. D.Thymine
    5. E.Uracil
    Show answer

    Answer: D. Thymine

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  17. 17.

    The vitreous humour in the human eye assists in ...... of objects

    1. A.contraction
    2. B.conversion
    3. C.reflection
    4. D.refraction
    5. E.retention
    Show answer

    Answer: D. refraction

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  18. 18.

    What type of fruit is pineapple?

    1. A.Aggregate
    2. B.Capsule
    3. C.Complex
    4. D.Multiple
    5. E.Simple
    Show answer

    Answer: D. Multiple

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  19. 19.

    Blood carrying digested food from the small intestine flows into the liver via the

    1. A.hepatic portal vein
    2. B.hepatic vein
    3. C.hepatic artery
    4. D.mesenteric artery
    5. E.renal vein
    Show answer

    Answer: A. hepatic portal vein

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  20. 20.

    An example of a natural source of light energy is

    1. A.electricity
    2. B.food
    3. C.heat
    4. D.petrol
    5. E.sun
    Show answer

    Answer: E. sun

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  21. 21.

    The association between a tapeworm and an infected mammal illustrates

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

    Answer: B. parasitism

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  22. 22.

    Tsetse-fly is a vector of a disease known as

    1. A.cholera
    2. B.dysentery
    3. C.elephantiasis
    4. D.malaria
    5. E.trypanosomiasis
    Show answer

    Answer: E. trypanosomiasis

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  23. 23.

    Which of the following is NOT a type of supporting tissue in plants?

    1. A.Cambium
    2. B.Collenchyma
    3. C.Parenchyma
    4. D.Sclerenchyma
    5. E.Xylem
    Show answer

    Answer: A. Cambium

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  24. 24.

    Which of these is NOT an example of heterotrophic mode of nutrition?

    1. A.Holozoic
    2. B.Holophytic
    3. C.Parasitic
    4. D.Saprophytic
    5. E.Symbiotic
    Show answer

    Answer: B. Holophytic

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  25. 25.

    Which of the following processes removes carbon (IV) oxide from the atmosphere?

    1. A.Combustion
    2. B.Excretion
    3. C.Photosynthesis
    4. D.Respiration
    5. E.Transpiration
    Show answer

    Answer: C. Photosynthesis

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  26. 26.

    Which of the following is a nitrifying bacterium?

    1. A.Azotobacter
    2. B.Clostridium
    3. C.Nitrobacter
    4. D.Rhizobium
    5. E.Staphylococcus
    Show answer

    Answer: C. Nitrobacter

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  27. 27.

    Dry, horny scales in reptiles help them to

    1. A.carryout gaseous exchange
    2. B.escape from predator
    3. C.facilitate movement
    4. D.look for mating partners
    5. E.prevent water loss.
    Show answer

    Answer: E. prevent water loss.

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  28. 28.

    Which of the following enzymes requires acidic medium to function?

    1. A.Amylase
    2. B.Erepsin
    3. C.Maltose
    4. D.Pepsin
    5. E.Ptyalin
    Show answer

    Answer: D. Pepsin

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  29. 29.

    Poor growth and yellowing of leaves in plants is due to deficiency of

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

    Answer: D. iron

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  30. 30.

    In a test for reducing sugar, the food substance is usually warmed with

    1. A.Benedict’s solution
    2. B.Millon’s reagent
    3. C.Sodium hydroxide
    4. D.Sudan III
    5. E.1% copper II sulphate solution
    Show answer

    Answer: A. Benedict’s solution

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  31. 31.

    Which of the following is NOT an evidence of organic evolution?

    1. A.Comparative anatomy
    2. B.Embryology
    3. C.Fossil records
    4. D.Homologous features
    5. E.Spontaneous generation.
    Show answer

    Answer: E. Spontaneous generation.

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  32. 32.

    Which of the following is NOT a function of placenta in mammals?

    1. A.absorption of food
    2. B.gaseous exchange
    3. C.removal of wastes
    4. D.secretion of hormones
    5. E.secretion of enzymes.
    Show answer

    Answer: E. secretion of enzymes.

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  33. 33.

    Deficiency of calcium in a child’s diet causes

    1. A.cretinism
    2. B.goiter
    3. C.kwashiorkor
    4. D.rickets
    5. E.scurvy
    Show answer

    Answer: D. rickets

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  34. 34.

    ln the process of succession, a climax community is established when

    1. A.a stable community is achieved
    2. B.the colonizers accommodate the new corners
    3. C.the colonizers are wiped out
    4. D.the first inhabitants settle down
    5. E.the new corners dominate the original inhabitants
    Show answer

    Answer: A. a stable community is achieved

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  35. 35.

    The process which reduces the nitrogen content of the soil is

    1. A.ammonification
    2. B.denitrification
    3. C.nitrogen fixation
    4. D.nitrification
    5. E.putrefaction
    Show answer

    Answer: B. denitrification

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  36. 36.

    All these statements are correct about a vein EXCEPT that it

    1. A.carries blood to the heart
    2. B.contains blood at low pressure
    3. C.has no valve
    4. D.possesses fairly thick walls
    5. E.usually carries deoxygenated blood
    Show answer

    Answer: C. has no valve

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  37. 37.

    Which of these is NOT a structural adaptation of desert plants for water conservation?

    1. A.Broad leaves with many stomata
    2. B.Leaves reduced into spines
    3. C.Scale leaves
    4. D.Stems and leaves with thick cuticle
    5. E.Sunken stomata
    Show answer

    Answer: A. Broad leaves with many stomata

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  38. 38.

    An example of a carnivorous plant is

    1. A.cassytha
    2. B.lichen
    3. C.mucor
    4. D.mushroom
    5. E.sundew
    Show answer

    Answer: E. sundew

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  39. 39.

    The following can increase crop production EXCEPT

    1. A.erosion control
    2. B.fertilizer application
    3. C.mechanization
    4. D.monocropping
    5. E.pest control
    Show answer

    Answer: D. monocropping

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  40. 40.

    The speed of wind can be measured with an instrument called

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

    Answer: A. anemometer

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  41. 41.

    ln mammals, fertilization takes place in the

    1. A.ovary
    2. B.oviduct
    3. C.uterus
    4. D.vagina
    5. E.vulva
    Show answer

    Answer: B. oviduct

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  42. 42.

    Which of the following does NOT occur during photosynthesis?

    1. A.Carbon dioxide is evolved
    2. B.Energy from the sun is utilized
    3. C.Glucose is synthesized
    4. D.Oxygen is given off
    5. E.Split of water
    Show answer

    Answer: A. Carbon dioxide is evolved

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  43. 43.

    Which of these is a direct photosynthetic product?

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

    Answer: B. glucose

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  44. 44.

    The gland that secretes the hormone glucagon is ... gland

    1. A.adrenal
    2. B.endocrine
    3. C.pancreas
    4. D.pituitary
    5. E.thyroid
    Show answer

    Answer: C. pancreas

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