WAEC - Biology (2020)

  • 1
    The cell as the basic unit of life consists of 
    คำตอบ
    (C)
    cytoplasm and nucleus
  • 2

    Use the following Classes of Arthropoda to answer the question below

    I. Crustacea II. Insecta III. Arachinda IV. Chilopoda

     

    Which members of the classes live mainly in an aquatic habitat?

     

    คำตอบ
    (A)
    I
  • 3

    Use the following Classes of Arthropoda to answer the question below

    I. Crustacea II. Insecta III. Arachinda IV. Chilopoda

     

    Which of the classes is characterised by the possession of two pairs of antennae?

    คำตอบ
    (A)
    I
  • 4
    The organism with spiral chloroplasts and nucleus suspended by cytoplasmic strands is
    คำตอบ
    (B)
    Spirogyra
  • 5
    The network of double membrane that conveys materials through the cytoplasm is the 
    คำตอบ
    (D)
    endoplasmic reticulum
  • 6

    The diagram above is an illustration of the longitudinal section of a plant organ. Study to answer the question below.

     

    Food is stored in the part labeled

    คำตอบ
    (B)
    II
  • 7

    The diagram above is an illustration of the longitudinal section of a plant organ. Study it and answer the question below;

    The plant is a? 

    คำตอบ
    (B)
    bulb
  • 8

    The diagram below is an illustration of the longitudinal section of a plant organ. Study it and answer the question below;

     

    The part labeled i is the 

    คำตอบ
    (B)
    scale leaf
  • 9
    Which of the following materials is not a living semi-permeable membrane?
    คำตอบ
    (D)
    Sheet of cellophane
  • 10
    In an experiment, mould and yeast cells were transferred into an environment with low oxygen concentration. After a few days, the mould dies while the yeast cells did not. Which of the following statements best explains the following observation.
    คำตอบ
    (C)
    Respiration can take place in yeast cells in the absence of oxygen
  • 11
    Which of the following tissues does not provide support in flowering plants?
    คำตอบ
    (D)
    Phloem
  • 12

    The diagram is an illustration of an experimental set-up. Study it and answer the question;

    The set-up directly measure 

     

     

    คำตอบ
    (A)
    transpiration of water by the shoot
  • 13

    The diagram above is an illustration of an experimental setup. Study it and answer the question below;

    The setup can measure comparatively the rate of 

    คำตอบ
    (C)
    transpiration of a single shoot of a plant under different experimental conditions
  • 14
    The respiratory organ of a cockroach
    คำตอบ
    (B)
    trachea
  • 15
    The excretory product of some reptiles, birds and insects is
    คำตอบ
    (D)
    uric acid
  • 16
    The part of the mammalian kidney that stores urine is the 
    คำตอบ
    (D)
    bladder
  • 17
    The properties of endocrine system include the following except 
    คำตอบ
    (D)
    release of secretion into ducts
  • 18
    The part of the central nervous system that controls unconscious actions in humans is the 
    คำตอบ
    (C)
    spinal cord
  • 19
    What happens when the ciliary muscles of the eye contract? The 
    คำตอบ
    (B)
    lens become more convex
  • 20

    The diagram is an illustration of a part of a flower. Study it and answer the question below;

     

    The function of the part labeled I is 

    คำตอบ
    (B)
    attract pollinators
  • 21

    The diagram below is an illustration of a part of a flower. Study it and answer the question below.

     

    The diagram is an illustration of a part of a flower. Study it and answer  the...

     

     

    The part labeled II is the 

    คำตอบ
    (C)
    fused ovaries
  • 22
    The reagent used in testing for carbon (IV) oxide is 
    คำตอบ
    (B)
    lime water
  • 23
    Oxygen comes out of the stomata during photosynthesis through the process known as 
    คำตอบ
    (A)
    diffusion
  • 24
    The first stable product of photosynthesis is
    คำตอบ
    (C)
    glucose
  • 25
    An example of a trace elements is
    คำตอบ
    (D)
    copper
  • 26
    Which of the following statements about a mixture of a protein-digesting enzyme and starch solution would be correct? The protein-digesting enzyme
    คำตอบ
    (A)
    has no effect on the starch solution
  • 27
    The mutualism type of relationship is different from a parasitic relationship because in mutualism
    คำตอบ
    (A)
    both organisms involved benefit
  • 28

    The table below shows the number of some organisms in habitats W and Y. Study it to answer the question below;

    Organism   Number in the habitat
       habitat W habitat Y
    Plankton  126 0
    Antelope 0 51
    Water flea 10 0
    Tilapia 23 0
    Lion 0 6
    Frog 6 0
    Grass 0 250

    What type of habitat is W?

     

    คำตอบ
    (B)
    Pond
  • 29

    The table below shows the number of some organisms in habitats W and Y. Study it to answer the question below;

    Organism   Number in the habitat
       habitat W habitat Y
    Plankton  126 0
    Antelope 0 51
    Water flea 10 0
    Tilapia 23 0
    Lion 0 6
    Frog 6 0
    Grass 0 250

     

    Which of the following statements about habitat W is correct? The 

    คำตอบ
    (C)
    type of organisms present indicate that habitat is aquatic
  • 30

    The table below shows the number of some organisms in habitats W and Y. Study it to answer the question below;

    Organism   Number in the habitat
       habitat W habitat Y
    Plankton  126 0
    Antelope 0 51
    Water flea 10 0
    Tilapia 23 0
    Lion 0 6
    Frog 6 0
    Grass 0 250

     

    The number of lions and antelops in habitat Y shows that the lion 

    คำตอบ
    (B)
    is the predator while the antelope is the prey
  • 31

    The diagram above illustrates an ecological instrument. Study it and answer the question below;

     

    A disadvantage of the abiotic factor measured by the instrument is that it

     

    คำตอบ
    (C)
    leads to flooding when in excess
  • 32

    The diagram below is an illustration of an ecological instrument. Study it an answer the question below;

    The diagram above illustrates an ecological instrument. Study it  and answer the question below;   A disadvantage...

    When the instrument is in use, it is usually? 

    คำตอบ
    (A)
    placed slightly above soil level
  • 33
    Soil with the finest texture is?
    คำตอบ
    (B)
    clay
  • 34
    The position occupied by an organism in food chain is the
    คำตอบ
    (C)
    trophic level
  • 35
    The depletion of the ozone layer will result in the earth surface receiving more
    คำตอบ
    (C)
    ultraviolet rays
  • 36

    Use the list of insects below to answer the question below; 

    I. Cotton stainer  II. Honeybee III. Termite IV. Weevil

    The insects whose activities are both beneficial and harmful to humans are;

    คำตอบ
    (B)
    II and III
  • 37

    Use the list of insects below to answer the question below; 

    I. Cotton stainer  II. Honeybee III. Termite IV. Weevil

    Which of the insects destroys grains?

    คำตอบ
    (D)
    IV
  • 38
    Conservation of natural resources does not 
    คำตอบ
    (D)
    threaten the survival of species
  • 39
    A company was prohibited from producing bags made from natural leopard skin. This is an attempt to conserve 
    คำตอบ
    (C)
    wildlife
  • 40
    Which of the following substances is not a conservable natural resource?
    คำตอบ
    (A)
    Mineral
  • 41
    A child that can receive blood donation from anybody belongs to the blood group 
    คำตอบ
    (D)
    AB
  • 42
    Variation which exhibits a wide range from one extreme to the other is 
    คำตอบ
    (C)
    continuous variation
  • 43
    Measurements of height and weight of students in a class show 
    คำตอบ
    (B)
    continuous variation
  • 44
    Which of the following statements about chromosomes is correct?
    คำตอบ
    (B)
    The number present in a specie is constant
  • 45
    Which of the following diseases can be inherited?
    คำตอบ
    (C)
    Sickle cell anemia