Posted on: 05:08 Wed, 20 Nov 2019




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Exam Time:- Friday 22nd Nov. 2019
Biology Paper I (Alternative to Practical) – 3.30pm – 5.30pm
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BIOLOGY PRACTICAL ANSWERS:

(1a)
A - Tilapia fish
B - Frog
C - Lizard
D - Bird

(1aii)
A - Pisces
B - Amphibia

(1aiii)
I - Lateral lines
II - Pectoral fin.
III - Tympanum
IV - Digits
v - Tail
VI - Unwebbed digits.
VII - Beak
VIII - Eye

(1aiv)
II - For movement and balance.
III - For hearing.
IV Movement/crawling.
VI - Crawling.
VII - For Feeding.
VIII - For Seeing

(1av)
Under B
(i) It lives in water and in land.
(ii) It possesses beak.
(iii) Presence of long legs.
(iv) Absence of scales on legs.

Under D
(i) It lives on trees.
(ii) Absence of beak.
(iii) Absence of long legs.
(iv) Presence of scales on long legs

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(2ai)
I - Funnel
II - Cotton wool
III - Beaker

(2aiii)
X = 50 - 35 = 15cm²

Y = 50 - 22 = 28cm²

Z = 50 - 15 =35cm²

(2aiii)
X - Sandy soil
Y - Loamy soil
Z - Clay soil

(2aiv)
Ha:
(i) Large soil particles.
(ii) Large pore spaces.

Hb:
(i) Moderate particle size.
(ii) Moderate pore space.

Hc:
(i) Small or fine particle size.
(ii) Little pore spaces.

(2av)
Experiment on water retention capacity of soil.

(2bi)
Lowest - January
Highest - September

(2bii)
(i) June
(ii) July

(2biii)
32 + 32
= 64cm²

(2biv)
(i) Osun
(ii) CrossRiver

(2bv)
Tropical rainforest

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(3ai)
J - coconut fruit
K - tomato fruit
L - Oil bean

(3aii)
J - Man
K - Animal
L - Wind

(3aiii)
I - Seed
II - Fibrous mesocarp
III - Seed
IV - Exocarp
V - Fruit stalk
VI - Placenta

(3bi)
M - Housefly.
N - Tick

(3bii)
M - insecta
N - Arachnida.

(3biii)
In a tabular form

Under M
(i) Three pairs of walking legs are present.
(ii) APossession of compound eye
(iii) The body is divided into head, thorax and abdomen.

Under N
(i) Presence of four pairs of walking legs.
(ii) Possession of simple eye
(iii) The body is divided into head and cephalothorax