Verified Waec 2018 Biology 3 Practical Answers

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Waec 2018 biology practical answers

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2a)
A- Fish
B- mammal
E- flowering plant
2aii)
they are used for respiration
2aiii)
i)possession of two rows of fine finger like filament
ii)possession of gill rakers
iii)possession of richly supplied blood capillaries

2b)
i)they both are supplied with capillaries
ii)both of them are used for respiration
2bii)
In a tabular form; Specimen C and specimen D

Under specimen C
() 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
2c)
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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



1ai)
A- lives in stagnant water
B- lives in Leftovers food
1aii)
A- into mosquito
B- into fly
1aiii)
A-arthuropoda (phylum insecta (class)
B-arthuropoda (phylum insecta (class)

 

1bi)
specimen A
i)it has bristles
ii)it has horny jaw
iii)it has siphon
1bii)
specimen B
i)it has a hook
ii)it has mouth
iii)it has spiracle

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.

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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



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