Wednesday, 26 April 2017

2017 WAEC BIOLOGY PRACTICAL

*2017/18 VERIFIED BIOLOGY PRACTICAL 3 ANSWERS*
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EXAMLORDS TM


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
sp C
i)It has wings
ii)It has jointed legs
iii)It has antennae
iv)It does not have clasper
sp 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)
sp C
i)the antennae are not segmented
ii)The eyes are smaller
iii)It has labial palps
sp E
i)The antennae are segmented
ii)The eyes are larger
iii)It does not have labial Palps


2a)
Carrot is good source of vitamin.
It is a source of diet that improve vision
it is used in production of juice
2aii)
It is a good source of carbohydrates
It supplies Energy
It serve as primary producer for heterotrophs


2b)
F - Is a root & tuber
G - is a stem & tuber
2bii) Specimen F
- it has an adventitious root
- it has bud at the base
Specimen G
- It has some bud on its surface
- 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
- it has proboscis
- it is smaller than J
- it feed on blood
- it has no color
SPECIMEN J
- It has Labrirum
- It is Larger
- it feed on abandon food
- it is dark brown



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.



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