BIOLOGY ANSWER

WAEC BIOLOGY PRACTICAL ANSWER

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Wednesday, 26th April, 2017

Biology 3 (Practical Alternative A) 9.30am – 11.30am (1st Set)

Biology 3 (Practical Alternative A) 12.00pm – 2.00pm (2nd Set)

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KEEP REFRESHING EVERY 5MINS

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No 1e) Click here to see the Diagram

OR USE THIS IMAGE

No 1e) Click here to see the Diagram

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No 4c) Click here to see the Diagram

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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 
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
1c)
They are both insects
1di)
i)leaf of a plant
1dii)
i)possession of spiracle for breathing
ii)possession of hooks for attachment

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

(4ai)

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.

(4d)
S - Drupe
T - Berry

(4e)
Tabulate:

Specimen S
-The seed is not many
-It has seed chamber
-It has oval shape
-It has no sepal attached

Specimen T
-The seeds are many
-It does not have seed chamber
-It has a spherical shape
-It has sepal attached

(4e)
-They both have succulent mesocarp
-They both have thin epicarp
-They both have seeds-They both have endocarp

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