WAEC - Biology (2023)

• 1

  The type of nutrition in which organisms take solid organic materials into their body is

  回答

  (B)

  holozoic
• 2

  The ability of organisms to maintain a constant internal environment is known as

  回答

  (D)

  homeostasis
• 3

  Organisms that feed on dead, decaying tissues of other organisms are known as

  回答

  (A)

  saprophytes
• 4

  Which of the following activities is against the conservation of natural resources?

  回答

  (C)

  deforestation
• 5

  The food substance that would produce the highest amount of energy is

  回答

  (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?

  回答

  (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?

  回答

  (D)

  V
• 8

  Growth in animals differs from that in plants because growth in

  回答

  (A)

  plants is indefinite
• 9

  The structure that its action could result in choking when talking and eating at the same time is

  回答

  (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

  回答

  (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

  回答

  (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

  回答

  (A)

  community
• 13

  The mouthparts of a grasshopper are adapted for

  回答

  (B)

  chewing
• 14

  What is the probability that a pregnancy would result in a male child?

  回答

  (B)

  \(\frac{1}{2}\)
• 15

  A vestigial structure in humans is

  回答

  (C)

  tailbone
• 16

  Which of the following instruments is not used in measuring abiotic factors in a habitat?

  回答

  (A)

  microscope
• 17

  Which of the following factors is the main problem facing xerophytes?

  回答

  (C)

  lack of adequate water
• 18

  A Rhesus negative woman may experience stillbirth of the second child that is Rhesus positive because

  回答

  (C)

  the blood of the foetus might clump
• 19

  Which of the following hormones is wrongly paired with its secretory organ?

  回答

  (C)

  adrenalin and kidney
• 20

  The rate of decomposition of dead organisms is faster in the tropical rainforest than in other biomes because

  回答

  (B)

  of availability of moisture
• 21

  Which of the following organisms would be the producer in a food chain?

  回答

  (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

  回答

  (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

  回答

  (C)

  I because it uses sunlight to manufacture food
• 24

  Which of the following soil types have a high capillarity?

  回答

  (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 

  回答

  (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?

  回答

  (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

  回答

  (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

  回答

  (B)

  mollusca
• 29

  Placentation in fruits is referred to as the

  回答

  (A)

  arrangement of ovules in the ovary of a flower
• 30

  Which of the following characteristics shows discontinuous variation in plants?

  回答

  (A)

  Colour of flower
• 31

  An example of a process that involves osmosis is the

  回答

  (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

  回答

  (B)

  iron
• 33

  The eye defect caused by an uneven curvature of the cornea or lens or both is

  回答

  (C)

  astigmatism
• 34

  Which of the following processes does not occur during photosynthesis?

  回答

  (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?

  回答

  (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? 

  回答

  (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

  回答

  (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?

  回答

  (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

  回答

  (C)

  III
• 40

  Fishes survive in water mainly because they possess

  回答

  (D)

  gills
• 41

  The tricuspid valve is located between the

  回答

  (A)

  right auricle and right ventricle.
• 42

  The androecium in a flowering plant is a collection of

  回答

  (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

  回答

  (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 

  回答

  (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

  回答

  (C)

  II