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WAEC Biology Practical Question and Answer – 2017 Expo

WAEC 2017 Biology Practical Questions and Answer Solution – May/June Real, Confirmed and Correct Expo Runs

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1ai)
i)Arthropoda

1aii)
i)They have segmented bodies 
ii)Their bodies are divided into head, thorax and abdomen 
iii)They have jointed appendages 
iv)They have exoskeletons

1bi)
In tabular form 
SPECIMEN C 
i)It has wings 
ii)It has jointed legs
iii)It has antennae 
iv)It does not have clasper 
SPECIMEN D 
i)It does not have wings 
ii)It does not have jointed legs
iii)It does not have antennae 
iv)It has clasper

1bii)
SPECIMEN C
i)the antennae are not segmented 
ii)The eyes are smaller
iii)It has labial palps

SPECIMEN E
i)The antennae are segmented 
ii)The eyes are larger 
iii)It does not have labial Palps

1e)
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2ai)
i)Carrot is good source of vitamin.
ii)It is a source of diet that improve vision
iii)it is used in production of juice

2aii)
i)It is a good source of carbohydrates
ii)It supplies Energy
iii)It serve as primary producer for heterotrophs

2b)
F – Is a root & tuber
G – is a stem & tuber

2bii) Specimen F
i)it has an adventitious root
ii)it has bud at the base
Specimen G
i)It has some bud on its surface
ii)it is a swollen end of of a special underground plant.

2c)
H – Class is Insecta
J – Class is insecta

Different btw H & J
Specimen H
i)it has proboscis
ii)it is smaller than J
iii)it feed on blood
iv)it has no color

SPECIMEN J
i)It has Labrirum
ii)It is Larger
iii)it feed on abandon food
iv)it is dark brown

2dii)
i)They both has wing
ii)They are both active in the night
iii)They both breadth with aid of trachea system
iv)The body is divided into head thorax & abdomen

2ei)
H – as proboscis for sacking blood
J – It as Labrirum for bitting & chewing.

2eii)
i)has a pair of antenna for preserving food
ii)Has a bitting& chewing mouth part.
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4ai)
phylum Annelida

4aii)
i)Body is elongated and vermiform.
ii)It has segmented body

4aiii)
Underground

4bi)
i)Their streamlined shape allows them to burrow through soil. 
ii)They have no skeletons or other rigid structures to interfere with their movement.

4bii)
i)Earthworms play a vital role in breaking down organic particles in soil and aerating soil. 
ii)It is used as bait in fishing.
iii)It destroys tender plant in fields and
garden by eating them.

4c)
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