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WASSCE 2018/19 SOLVED PRACTICAL BIOLOGY IS AVAILABLE HERE

By | On April 16, 2018 (7 months ago)

WASSCE 2018/19 BIOLOGY 3
SOLVED BY STUTENTCLUB TEAM.

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www.studentclub.com.ng
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(1ai)
A – Stagnant water (aquatic habitat)
B – Decomposing matter(terrestrial habitat)

(1aii)
A- Mosquito(Anopheles).
B- Housefly.

(1aiii)
A – Arthropoda (phylum)
Insecta (class)

B – Arthropoda (phylum)
Insecta (class)

(1b)
Specimen A
(i) It has bristles.
(ii) It has horny jaw.
(iii) It has siphon

Specimen B
(i) It has a hook.
(ii) It has mouth.
(iii) It has spiracles.

(1ci)
In a tabular form
Under A
(i) It has not got a hook
(ii) It has a bristle.
(iii) It has siphon
(iv) It has mouth brush.

Under B
(i) It has a hook
(ii) It doesn’t have a bristle.
(iii) It does not have siphon.
(iv) It does not have mouth brush.

(1cii)
(i) They are both segmented organisms.
(ii) They both have mouth.
(iii) Both have thorax
2a)
i)C- Tilapia fish
D- Rat
E- Mango plant
ii)Excretion
iii)
(a)Presence of gill filament which helps in gaseous exchange
(b)Presence of gill rakers which traps particles that might damage the delicate gill filament
(c)Gill arch which is bony and holds the gulls filament in shape

2b)
i)• Both have thin surface
ii)• Both are moist

2bii)
Tabulate
Under C
(a)Gill arch is present
(b)Gill filament is present
(c)Gill rackers is present

Under D
(a)Gill arch is absent
(b)Gill filament is absent
(c)Gill rackers is absent

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2a)
i)C- Tilapia fish
D- Rat
E- Mango plant
ii)Excretion
iii)
(a)Presence of gill filament which helps in gaseous exchange
(b)Presence of gill rakers which traps particles that might damage the delicate gill filament
(c)Gill arch which is bony and holds the gulls filament in shape

2b)
i)• Both have thin surface
ii)• Both are moist

2bii)
Tabulate
Under C
(a)Gill arch is present
(b)Gill filament is present
(c)Gill rackers is present

Under D
(a)Gill arch is absent
(b)Gill filament is absent
(c)Gill rackers is absent
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4a
I)Sepals,petals,carpels and stamen
ii)Sepals- 5
Petals – 5
Carpels -1
Stamen -19

4b
i)Sex – monoeccious
ii)Pressure of both carpels and stamens

4c
i)Bilateral
ii)It can be cut vertically into two similar halves through one olane

4d)
K- insect
L-Wind

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COMPLETED
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Categories: NECO RUNZ

One Response

  1. 1ai)
    A- water
    B- decaying plant and animal matter
    ———————————————————

    1aiii)
    A) A phylum is Artropoda, class is insecta
    B- phylum is Artropoda, class is insecta
    ——————————————————
    1b)
    A)
    i) well developed head with mouth brushes
    ii) on large thorax with no legs
    iii) segmented abdomen

    B)
    i) reduced head
    ii) legless
    iii) mouth parts at the pointed end
    ——————————————————

    1c) in tabular form
    A-
    I) mosquito larvae can only survive in water
    ii) well developed head
    iii) mouth part in sucking

    B
    i) maggots do not need a water habitat to survive
    ii) reduced head
    iii) mouth parts for biting and chewing

    ——————————————————
    1cii)
    i) both are legless
    ii) both have thorax
    iii) both have mouth parts

    ——————————————————
    (2ai)
    C – Fish
    D – Mammal
    E – Flowering plant

    (2aii)
    They are used for respiration.

    (2aiii)
    (i) Possession of two rows of fine finger like Gill filament.
    (ii) Possession of gill rakers.
    (iii) Possession of richly supplied blood capillaries.

    (2bi)
    (i) Both are supplied with blood capillaries.
    (ii) Both of them are used for respiration.

    (2bii)
    In a tabular form; Specimen C and specimen D

    Under specimen C
    (i) Possession of gill rakers.
    (ii) Possession of gill filament.
    (iii) Possession of gill arch.

    Under specimen D
    (i) Possession of bronchus.
    (ii) Possession of alveoli.
    (iii) Possession of alveolar cavity.

    (2c)
    Draw the 6cm-8cm long of specimen C ie Gill of fish

    ——————————————————
    (4)
    (ai) Sepals, Petals, Carpels and Stamens
    (ii) Sepals – 5
    (iii) Petals – 5
    (iv) Carpels – 1
    (v) Stamen – 10

    (4bi) Sex – monoecious
    (ii) presence of both Carpels and Stamens

    (4c)
    i – Bilateral
    ii – it can be cut vertically into two similar halves through one plane

    (4d)
    K – insect
    L – wind

    by Mr Method on Apr 16, 2018 at 9:47 am Reply

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