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2013 - WAEC Biology Past Questions and Answers - page 1

1

In which of the following levels of classification are the members most similar?

A
Order
B
Genus
C
Species
D
Phylum
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2

Spirogyra is regarded as a multicellular plant because

A
the cylindrical cells are linked end to end
B
its cells are linked together by cytoplasmic strands
C
its cells are large
D
it is an algae containing a large vacuole
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3

Which of the following pairs of structures in living organisms do not perform similar functions?

A
Lungs and spiracles
B
Root hairs and mammalian hairs
C
Feathers and scales
D
Contractile vacuole and Kidneys
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4

Which of the following sequences is the correct arrangement of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside ?

A
pith , phloem, cambium, xylem, parenchyma, collenchyma and epidermis
B
Xylem, phloem, cambium, cortex, endodermis, collenchyma and epidermis
C
Pith,xylem, cmbium,phloem,, collenchyma, parenchyma and epidermis
D
phloem, xylem, cambium, cortex, endodermis, collenchyma and epidermis
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5

An animal which possesses scales nares and a backbone is likely to be a

A
toad
B
lizard
C
rat
D
bat
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6

The opening of the guard cells of the epidermis in plants is by the process of

A
osmosis
B
diffusion
C
active transport
D
transpiration
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7

What happens to a plant if the shoot tip is cut off and replaced by an agar block containing auxin? it will

A
stop growing
B
grow rapidly
C
continue to grow normally
D
die completely
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8

Anaerobic respiration results in the production of

A
more energy than aerobic respiration
B
no energy
C
an equal amont of energy to aerobic respiration
D
less energy than aerobic respiration
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9

Which of the following is not a skeletal tissue?

A
Plasma
B
Chitin
C
Cartilage
D
Bone
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10

Which of the following statements is not correct about the mammalian heart?

A
Oxygenated blood enters the left auricle from the pilmonary vein
B
the walls of the ventricle are thicker than those of the auricle
C
blood passes from of blood into the right ventricle to the left auricle through the aorta
D
the tricuspid valve prevents the back flow of blood into the right auricle
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