Waec Biology Practical Questions And Answers 2018 Expo

Waec Biology Practical Questions And Answers 2018 Expo

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.

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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(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

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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