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2019 NECO GCE BIOLOGY PRACTICAL ANSWER

Neco runs for gistpower.com

BIOLOGY-PRACTICALS-ANSWERS
(3ai)
J – Coconut fruit
K – Tomato fruit

(3aii)
J – Man
K – Animal
L – Wind

(3aiii)
I – seed
II – fibrous mesocarp
III – seed
IV – Exocarp
V – Fruit stalk
VI – Placenta

(3bi)
M – House
N – Spider

(3bii)
M– Class insecta
N– class Arachnida

(3biii)
TABULATE

(M)
– Three pairs of working legs are present

– anterna is present

– the body is divided in to head, thurax and abdomen

(N)
– present of four working legs

– No antenna is N

– the body is divided in to heat and cephalothorax

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

(1aii)
A – Pisces
B – Amphibia

Jamb cbt runs

(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
=============

(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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