WAEC - Biology (1997)

• 1

  Which of the following organism possesses both plant and animal characteristics?

  回答

  (C)

  Euglene
• 2

  

  The structure represented in the diagram above is

  回答

  (C)

  a filament
• 3

  

  The part labelled I in the diagram is the

  回答

  (B)

  chloroplast
• 4

  

  What is the function of the part labelled II in the diagram? It

  回答

  (D)

  suspends the nucleus
• 5

  Which of the following organelles helps to remove excess water
  from cells?

  回答

  (C)

  Contractile vacuole
• 6

  Which of the following processes occurs by diffusion?

  回答

  (D)

  Exchange of nutrients between a mother and the foetus
• 7

  Which of the following is a product of brewing when yeast is used as a fermenting agent?

  回答

  (D)

  Ethanol
• 8

  Which of the following hind limb bones is equivalent to the humerus of the forelimb?

  回答

  (E)

  Femur
• 9

  Clotting of blood is a function of

  回答

  (B)

  vitamin K
• 10

  Which of the following structures is associated with respiration in insects?

  回答

  (B)

  Spiracle
• 11

  

  Which of the labelled parts is made up of dead cells?

  回答

  (D)

  II and III
• 12

  

  The part labelled I in the diagram is called

  回答

  (C)

  Ienticel
• 13

  The malpighian tubule plays a major role in

  回答

  (E)

  excretion
• 14

  Filtered blood from the kidney is carried back to the circulatory system
  through the

  回答

  (C)

  renal vein
• 15

  The early removal of the pituary gland in animals may cause

  回答

  (A)

  ceasation of growth
• 16

  A high concentration of auxin in the root will

  回答

  (A)

  inhibit growth
• 17

  

  The part labelled II in the diagram is the

  回答

  (B)

  grey matter
• 18

  

  Which of the labelled parts is filled with cerebrospinal fluid?

  回答

  (E)

  I only
• 19

  Which of the following is an example of a reflex action?

  回答

  (A)

  Sneezing
• 20

  During mating, the male toad holds the female with its?

  回答

  (D)

  nuptial pad
• 21

  

  The diagram above represents a?

  回答

  (E)

  germinating pollen grain
• 22

  

  The part labelled I in the diagram is the

  回答

  (D)

  endosperm
• 23

  Which of the following fruits is a schizocarp?

  回答

  (B)

  Desmodium
• 24

  Which of the following is not a characteristic of wind dispersed fruits and seeds?

  回答

  (D)

  Stickyjuice
• 25

  Which of the following structures transports water from the roots to the leaves?

  回答

  (D)

  Xylem
• 26

  

  The eye defect represented in the diagram is?

  回答

  (A)

  myopia
• 27

  

   

  The above defect is corrected by using a?

  回答

  (A)

  concave lens
• 28

  Which of the following organisms is viviparous?

  回答

  (C)

  Sheep
• 29

  The reduction of nitrates to gaseous nitrogen is

  回答

  (E)

  denitrification
• 30

  The association between protozoa and termites is an example of

  回答

  (A)

  symbiosis
• 31

  Flatworms are classified as

  回答

  (A)

  Platyhelminthes
• 32

  The essential parts of a flower are

  回答

  (D)

  androecium and gynoecium
• 33

  Which of the following parts of the tooth is first damaged during dental decay?

  回答

  (B)

  Enamel
• 34

  

  The set- up above is used to demonstrate

  回答

  (D)

  fermentation
• 35

  

  What will be the colour of the solution in the test tube labelled II at
  the end of the experiment?

  回答

  (C)

  Milky
• 36

  

  Which gas will pass into the test tube labelled II from I?

  回答

  (B)

  Carbon dioxide
• 37

  In which of these forms is carbohydrate stored in yam?

  回答

  (C)

  Starch
• 38

  Northern Guinea savanna is associated with

  回答

  (D)

  abundant grasses
• 39

  Which of the following activities is not necessary in population sampling?

  回答

  (E)

  Feeding the organisms
• 40

  Which of the following is an abiotic factor?

  回答

  (B)

  Rainfall
• 41

  The maximum and minimum thermometer is used to measure

  回答

  (B)

  highest and lowest temperature of the day
• 42

  Which of the following organisms will have the highest biomass?

  回答

  (D)

  Phytoplankton
• 43

  Which of the following is the correct sequence for energy transfer and nutrient cycling among living things
  in an ecosystem?

  回答

  (D)

  Producers → consumers → decomposers
• 44

  Which of the following factors does not affect the distribution of organisms in an aquatic habitat?

  回答

  (C)

  Humidity
• 45

  A habitat with low rainfall, very low humidity, exposed soil with little plant cover, few trees and shrubs is
  likely to be

  回答

  (C)

  a desert
• 46

  Which of the following factors may not cause over-crowding?

  回答

  (C)

  Reduced birth rate
• 47

  Crops grown mainly to feed animals are called

  回答

  (A)

  forage crops
• 48

  The farming practice by which an exhausted farm land is left for a number of years before cultivation is
  known as

  回答

  (D)

  bush fallowing
• 49

  In palm-wine, yeast acts as a

  回答

  (D)

  catalyst
• 50

  Which of the following farm practices can cause loss of soil fertility?

  回答

  (E)

  intensive cropping
• 51

  One of the use of variation is in

  回答

  (B)

  determining paternity
• 52

  

  In which of the underlisted blood groupings is agglutination likely to occur during transfusion?

  回答

  (D)

  IV
• 53

  Which of the following is not a morphological variation

  回答

  (E)

  Tongue rolling
• 54

  In man haemophilia is recessive and sex linked, The
  
  probability of carrier mother and a normal father having a haemophilic male is

  回答

  (B)

  1/8
• 55

  In which of the following is the knowledge of genetics not applicable?

  回答

  (B)

  Preservation of seeds