WAEC - Biology (1999)

• 1

  Which of the following organisms does not exist as a single cell?

  回答

  (C)

  Volvox
• 2

  Which of the following features of Paramecium is not an advancement over Amoeba? The possession of

  回答

  (D)

  nucleus
• 3

  Which of the following diseases results from the deficiency of insulin?

  回答

  (D)

  Diabetes
• 4

  Root hairs absorb water from the soil by

  回答

  (B)

  osmosis
• 5

  One of the similarities between algae and mosses is their possession of

  回答

  (A)

  chlorophyll
• 6

  The vessel that carries blood from the heart to the lungs is called an artery because it

  回答

  (C)

  carries blood away from the heart
• 7

  During anaerobic respiration in skeletal muscles, pyruvic acid is

  回答

  (A)

  reduced to lactic acid
• 8

  Which of the following organisms exhibits 'the stages listed above during conjugation?

  回答

  (C)

  Spirogyra
• 9

  Which of the following arrangements is the correct sequence of the process?

  回答

  (A)

  II, I, IV, V and III
• 10

  The teeth used for tearing and cutting are

  回答

  (D)

  canine and incisors
• 11

  Turgor pressure occurs in a cell when the?

  回答

  (A)

  volume of its cell sap increases
• 12

  

  Which of the following bones is illustrated in the diagram?

  回答

  (D)

  Scapula
• 13

  

  The part labelled l in the diagram is for the attachment of

  回答

  (C)

  shoulder muscles
• 14

  

  Which of the following bones forms a joint at the point labelled II in the diagram?

  回答

  (A)

  Humerus
• 15

  Which of the following is correct about the transverse section of a vein, when compared with that of an
  artery?

  回答

  (D)

  There are valves in veins but not in arteries.
• 16

  Terrestrial plants exchange gases through the following except

  回答

  (A)

  chloroplast
• 17

  Glomerular nitrate contains

  回答

  (D)

  urea
• 18

  Which of the following is not a function of the liver in mammals?

  回答

  (D)

  Filtration of urea from the blood.
• 19

  Iodine is needed by a patient suffering from a malfunctioning of the

  回答

  (B)

  thyroid gland
• 20

  The medulla oblongata controls all the following except

  回答

  (D)

  balance and posture
• 21

  Which of the following statements about short sight is not correct?

  回答

  (A)

  The eyeball is too short
• 22

  Hypermetropia is corrected by the use of

  回答

  (B)

  convex lenses
• 23

  

  The structure labelled I is the

  回答

  (A)

  oviduct
• 24

  

  In which of the labelled structures does implantation take place?

  回答

  (C)

  IV
• 25

  

  Which of the following indicates the direction of the movement of a sperm
  introduced into the female reproductive system?

  回答

  (B)

  VI → V → IV → I
• 26

  

  Which of the labelled parts is responsible for the release of ripe ovum?

  回答

  (B)

  III
• 27

  During germination of seeds water is taken by the process of

  回答

  (C)

  imbibition
• 28

  Which of the following is not a characteristics feature of a wind dispersed fruit?

  回答

  (D)

  Buoyancy
• 29

  During photosynthesis, light energy is always absorbed by the

  回答

  (C)

  chlorophyll
• 30

  Which of the above factors can be a limiting factor for the process to proceed?

  回答

  (A)

  I and II only
• 31

  The factors required for the dark phase of photosynthesis are

  回答

  (C)

  III, IV and V only
• 32

  In water- culture experiments the culture solutions are protected from sunlight in order to

  回答

  (B)

  prevent algae from growing in the solution
• 33

  The importance of a balanced diet is to

  回答

  (D)

  provide good health for an individual
• 34

  The dentition of a herbivore is distinct from that of other animals due to the presence of

  回答

  (A)

  diastema
• 35

  Which of the following statements is true?

  回答

  (C)

  Pepsin acts on proteins to give peptide
• 36

  Which of the following organisms can be found in fresh water habitat?

  回答

  (D)

  Spirogyra and pond skater
• 37

  Which of the following is not a biotic factor?

  回答

  (D)

  Pressure
• 38

  Desert plants are usually called

  回答

  (C)

  xerophytes
• 39

  The secchi disc is used to measure

  回答

  (C)

  turbidity of water
• 40

  Soil factors in an ecosystem are referred to as

  回答

  (D)

  edaphic
• 41

  A known weight of soil sample was oven-dried to obtain a constant weight. The loss in weight was due to
  loss of

  回答

  (C)

  water and organic matter
• 42

  Carbon is added to the atmosphere by the following processes except

  回答

  (C)

  photosynthesis
• 43

  Which of the following is a means of measuring primary production?

  回答

  (D)

  harvested plants in a unit area
• 44

  A situation whereby some mammals remain inactive throughout dry and hot seasons is known as

  回答

  (A)

  aestivation
• 45

  Which of the following factors may not affect living organisms in an aquatic habitat?

  回答

  (C)

  Humidity
• 46

  Which of the following parasites is a flatworm?

  回答

  (D)

  Schistosoma
• 47

  During prolonged exercises, glucose in the muscle is convened to

  回答

  (B)

  lactic acid
• 48

  Which of the following is an effect of carbon monoxide on man?

  回答

  (B)

  Reducing oxygen carrying capacity of blood
• 49

  Which of the following is a renewable natural resources?

  回答

  (A)

  Air
• 50

  Which of the following resources is competed for by organisms in the desert?

  回答

  (D)

  Water
• 51

  The major types of man’s finger prints do not include

  回答

  (C)

  simple
• 52

  Which of the following is an example of discontinuous variation?

  回答

  (C)

  Blood groups of patients
• 53

  Which of the following statements is correct about variation?

  回答

  (D)

  offsprings differ from their ancestors and from each other
• 54

  Which of the following statements about sex determination is correct? At fertility

  回答

  (A)

  the probability of male to female offspring is 1/2
• 55

  The genotypic ratio of 1 : 2 : 1 in the offspring of a hybrid cross illustrates the law of

  回答

  (C)

  segregation