2001 - WAEC Biology Past Questions and Answers - page 2
11
Which bf the following structures are visible in the cell of a plant during mitosis?
A
Centrioles, chromatids and nucleolus
B
Homologous chromosomes, nuclear membrane and spindle fibres
C
cell wall, centrioles and chromatids
D
Chromosomes, nuclear membrane and centromere
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12
Display is a phenomenon which occurs when an animal is
A
ready for mating
B
fighting to defend itself
C
approaching puberty
D
chasing away an intruder
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13
The advantages of sexual reproduction include the following except
A
t allows the formation of new species
B
it allows production of desirable traits
C
it permits variation of individuals
D
it provides means for the variation of chromosome number from generation to generation.
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14
Which of the following groups contains a non-supporting structure in animals?
A
Cartilage, bone and pseudopodia
B
Pellicle, chitin and bone
C
Humerus, ribs and cartilage
D
Femur, pellicle and chitin
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15
Which of the following statements is true about blood groupings?
A
Group AB can donate blood to all other groups
B
Group 0 are universal recipients.
C
Group A has A antigen in its plasma
D
Group O has no antigen.
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16
Which of the following is not a constituent of blood plasma?
A
Proteins
B
Mineral salts
C
Water
D
Platelets
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17
The process by which plants convey food material to different parts of the body is called
A
nutrition
B
absorption
C
circulation
D
translocation
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18
Which part of the gill of fish is involved in gaseous exchange?
A
Gill slits
B
Gill bars
C
Gill covers
D
Gill filaments
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19
Which of the following is not a product of fermentation of glucose?
A
Energy
B
Alcohol
C
Lactic acid
D
Carbon dioxide
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20
Which of the following pairs of structures does not perform similar functions?
A
Lungs and spiracles
B
Root hair and mammalian hair
C
Feathers and scales
D
Contractile vacuole and kidney
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