Verified NECO GCE 2018 Biology Practical Answers

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Verified NECO GCE 2018 Biology Practical Answers


    C–Light meter
    D–Rain gvage
    E–Wind vane

    A–it is used to measure relative humidity.
    B–it is used to measure the speed of wind.
    C–it is used to measure light intensity on land
    D–it is used to measure the amount of rainfall
    E–it is used to measure the direction of of wind.

    UNDER I:
    Example | Description | Use of beak
    UNDER F:
    Eagle | the beak is short and cause to enable tear prey | it is used to hold prey firmly, it use to tag prey
    UNDER G:
    Cock | it is short and little curve | it is used to peck the food
    UNDER H:
    Duck | it is long and flat | it enable animal to sieve the food

    (I) photosynthesis
    (II) photosynthesis is defined as the process by which green plants manufactur their food making use of Co2 and water in the a presence of sunlight

    It is used to split water into hydrogen ion and hydroxyl ions in photosynthesis

    Blowing splint

    It is a controlled experiment

    An experiment to show that CO2 is absorbed while is giving out

    (i) Avoidance of presence of sunlight
    (ii) Avoidance of photosynthesis in terms of increment

    From the green leaves



    The head region of fish show the gills.

    I - Nostril
    II - Eye
    III - Gill
    IV - Scale
    V - Fin

    For gaseous exchange

    O - Grasshopper
    P - Spider

    O - insecta
    P - arachnida

    In a tabular form:
    Differences between O and P:
    1. Possession of compound eyes.
    2. Possession of six legs
    3. Possession of three body segments.

    1. Possession of simple eye.
    2. Possession of eight legs.
    3. Possession of two body segments.

    Q => Chtomdomena monoica
    R => Euglena viridis
    S => Amoeba preteus
    T => Paramecium caudatus

    I => flagellum
    II => Pyrenoid
    III => Eyespot
    IV => Chloroplasts
    V = Nucleus
    VI => Meganucleus
    VII = Contractive Vacuole

    Q = flagellum
    R= flagellum
    S= pseudopodum
    T= cilia

    I=> it use flagellum for movement
    III=> it use flagellum for sighting
    v=> it contains cellular activities in the cell
    vI=> it is used removal of excess water

    The three similries between Q and R are:-
    - Possession of flagellum
    - possession of eye spot
    - possession of nucleus

    The three difference between S and T are

    Under S:-
    - S is shapeless
    - absence of cilia
    - possession of pseudopodia

    Under T:-
    - T is slopper in shape
    - possession of cilia
    - Absence of pseudopodia

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