Verified Waec 2017 Biology Practical Questions And Answers



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     verified Waec Biology Practical answers now available

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    ANSWERS 

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

    1e)


    2)


    ================================
    2 ai)
    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
    2 aii )
    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
    - 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.


    Q2c) You are to draw a table, the difference between H and J
    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

    2dii)
    - They both has wing
    - They are both active in the night
    - They both breadth with aid of trachea system
    - The body is divided into head thorax & abdomen
    2ei)
    H - as proboscis for sacking blood
    J - It as Labrirum for bitting & chewing.
    2eii)
    - has a pair of antenna for preserving food
    - Has a bitting& chewing mouth part.
    ================================
    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)
    Drawing will be uploaded soon

    (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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