WAEC - Biology (2023)

  • 1
    The type of nutrition in which organisms take solid organic materials into their body is
    Răspuns
    (B)
    holozoic
  • 2
    The ability of organisms to maintain a constant internal environment is known as
    Răspuns
    (D)
    homeostasis
  • 3
    Organisms that feed on dead, decaying tissues of other organisms are known as
    Răspuns
    (A)
    saprophytes
  • 4
    Which of the following activities is against the conservation of natural resources?
    Răspuns
    (C)
    deforestation
  • 5
    The food substance that would produce the highest amount of energy is
    Răspuns
    (C)
    fat
  • 6

    The diagrams above are illustrations of forms in which a particular group of organisms exist. Study them and answer the question.

    Which group of organisms is illustrated?

    Răspuns
    (D)
    bacteria
  • 7

    The diagrams above are illustrations of forms in which a particular group of organisms exist. Study them and answer the question.
    in which of the illustrated forms does the organism that causes cholera exist?

    Răspuns
    (D)
    V
  • 8
    Growth in animals differs from that in plants because growth in
    Răspuns
    (A)
    plants is indefinite
  • 9
    The structure that its action could result in choking when talking and eating at the same time is
    Răspuns
    (B)
    epiglottis
  • 10

    The diagram above is an illustration of a mango leaf drawn by a student in a Biology test. The student failed the test. Study it and answer the question.

    The likely reason why the student failed the test was that the

    Răspuns
    (A)
    labels were wrong and the guidelines were not touching the structures
  • 11

    The diagram below is an illustration of a mango leaf drawn by a student in a Biology test. The student failed the test. Study it and answer the question.
    which features of the diagram would have earned the student more marks if shown

    Răspuns
    (D)
    title and margin
  • 12
    A group of organisms belonging to different species that coexist in the same habitat and interact is referred to as
    Răspuns
    (A)
    community
  • 13
    The mouthparts of a grasshopper are adapted for
    Răspuns
    (B)
    chewing
  • 14
    What is the probability that a pregnancy would result in a male child?
    Răspuns
    (B)
    \(\frac{1}{2}\)
  • 15
    A vestigial structure in humans is
    Răspuns
    (C)
    tailbone
  • 16
    Which of the following instruments is not used in measuring abiotic factors in a habitat?
    Răspuns
    (A)
    microscope
  • 17
    Which of the following factors is the main problem facing xerophytes?
    Răspuns
    (C)
    lack of adequate water
  • 18
    A Rhesus negative woman may experience stillbirth of the second child that is Rhesus positive because
    Răspuns
    (C)
    the blood of the foetus might clump
  • 19
    Which of the following hormones is wrongly paired with its secretory organ?
    Răspuns
    (C)
    adrenalin and kidney
  • 20
    The rate of decomposition of dead organisms is faster in the tropical rainforest than in other biomes because
    Răspuns
    (B)
    of availability of moisture
  • 21
    Which of the following organisms would be the producer in a food chain?
    Răspuns
    (B)
    maize
  • 22

    The diagrams below are illustrations of organisms in a habitat. Study them and answer the question,
    The feeding relationship between the organisms labelled III and IV in the diagrams is

    Răspuns
    (A)
    predation
  • 23

    The diagrams below are illustrations of organisms in a habitat. Study them and answer the question, the producer in the diagram is

    Răspuns
    (C)
    I because it uses sunlight to manufacture food
  • 24
    Which of the following soil types have a high capillarity?
    Răspuns
    (D)
    silt and clay
  • 25

    The diagram above is an illustration of a structure in the skeletal system of humans. Study it and answer the question
    the illustrated structure is a part of the 

    Răspuns
    (B)
    axial skeleton
  • 26

    The diagram below is an illustration of a structure in the skeletal system of humans. Study it and answer the question
    An individual was involved in a car accident and the illustrated structure was badly injured. Which of the following structures would most likely be affected?

    Răspuns
    (B)
    Eye, cerebellum and ear
  • 27
    Study the list of organisms below and use them to answer the questions.
    I-Hydra
    II-Owl
    III-Snake
    IV-Snail
    The arrangement of the organisms in order of increasing complexity is
    Răspuns
    (B)
    I-IV-III - II
  • 28
    Study the list of organisms below and use them to answer the questions.
    I-Hydra
    II-Owl
    III-Snake
    IV-Snail
    The Phylum of the organism labeled IV is
    Răspuns
    (B)
    mollusca
  • 29
    Placentation in fruits is referred to as the
    Răspuns
    (A)
    arrangement of ovules in the ovary of a flower
  • 30
    Which of the following characteristics shows discontinuous variation in plants?
    Răspuns
    (A)
    Colour of flower
  • 31
    An example of a process that involves osmosis is the
    Răspuns
    (A)
    movement of water from root hairs into cortical cell
  • 32
    Stunted growth and small yellow leaves in plants are symptoms of the deficiencies of
    Răspuns
    (B)
    iron
  • 33
    The eye defect caused by an uneven curvature of the cornea or lens or both is
    Răspuns
    (C)
    astigmatism
  • 34
    Which of the following processes does not occur during photosynthesis?
    Răspuns
    (B)
    Carbon (IV) oxide is evolved
  • 35

    The illustration above is a genetic diagram. Study it and answer the question below.
      What is the name of the genetic diagram?

    Răspuns
    (C)
    Punnett square
  • 36

    The illustration above is a genetic diagram. Study it and answer the question below

    What do the labels I, II, III, and IV respectively represent? 

    Răspuns
    (B)
    EE, EE, Ee, and Ee
  • 37

    The illustration above is a genetic diagram. Study it and answer the question

    What is the genotypic ratio

    Răspuns
    (A)
    1:1
  • 38

    The diagram above is an illustration of a cell in which photosynthesis takes place. Study it and answer the question

    In which of the labeled parts would molecules of water and carbon (IV) oxide combine to form sugar?

    Răspuns
    (D)
    IV
  • 39

    The diagram above is an illustration of a cell in which photosynthesis takes place. Study it and answer the question. the oxygen gas formed in the cell diffuses out of the cytoplasm into the air spaces through the part labeled

    Răspuns
    (C)
    III
  • 40
    Fishes survive in water mainly because they possess
    Răspuns
    (D)
    gills
  • 41
    The tricuspid valve is located between the
    Răspuns
    (A)
    right auricle and right ventricle.
  • 42
    The androecium in a flowering plant is a collection of
    Răspuns
    (A)
    stamens
  • 43

    The diagram above is an illustration of some structures used for gaseous exchange in humans. Study it and answer the question
    The parts labeled 1, II, III, and IV respectively are

    Răspuns
    (D)
    larynx, trachea, bronchiole, and bronchus.
  • 44

    The diagram above is an illustration of some structures used for gaseous exchange in humans. Study it and answer the question
    the part labeled III can be found in the 

    Răspuns
    (A)
    lung
  • 45
    Use the information below to answer the question
    I - making shoes from crocodile skin
    II - making tables with plastic
    III - using elephant tusk for decoration
    IV - using firewood for cooking

    The act that should be encouraged for the conservation of wildlife and forests is
    Răspuns
    (C)
    II