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NECO 2024 BIOLOGY PRACTICAL ANSWER
NECO 2024 BIOLOGY PRACTICAL ANSWER

NECO 2024 BIOLOGY PRACTICAL ANSWER



(1ai)
A - Onion Bulb
B - Ginger Rhizome
C - A tuber of Irish Potato
D - A week old potted Bean Seedling
E - A week old potted Guinea-corn Seedling

(1aii)
A - Vegetative propagation
B - Vegetative propagation
C - Vegetative propagation

(1aiii)


(1aiv)
D - Epigeal germination
E - Hypogeal germination

(1av)
D:
(i) The cotyledons are pushed above the soil surface during germination.
(ii) The hypocotyl elongates and forms an arch to pull the cotyledons out of the soil.

E:
(i) The cotyledons remain below the soil surface during germination.
(ii) The epicotyl elongates, leaving the cotyledons underground.

(1avi)
D - Taproot system
E - Fibrous root system

(1avii)
D - Reticulate venation
E - Parallel venation

(1aviii)
A - Fleshy scale-leaves
B - Rhizome
C - Tuber

=============================

(2ai)
F - Pigeon's head with the neck
G - Atlas vertebra of a rabbit
H - Lumbar vertebra of a rabbit
I - Cactus plant
J - Water lettuce

(2aii)
(PICK ANY ONE)
(i) It allows nodding movements of the head (flexion and extension)
(ii) It provides support for the skull
(iii) It facilitates attachment of muscles and ligaments for head movement

(2aiii)
G - Neck region
H - Lower back region

(2aiv)
Axis vertebra

(2av)


(2avi)
Mammalia

(2avii)
I:
(PICK ANY THREE)
(i) Possession of thick, fleshy stem to store water
(iii) Possession of spines instead of leaves to reduce water loss
(iii) Possession of shallow but widespread root system to absorb water quickly
(iv) Possession of waxy cuticles on stems to reduce water loss

J:
(PICK ANY TWO)
(i) Air-filled tissues in leaves provides buoyancy, allowing the plant to float on water surfaces.
(ii) Floating root system for nutrient absorption from water
(iii) Reduced cuticle for absorbing nutrients and water directly

============================

(3ai)
K - Ripe Tomato fruit
L - Ripe Palm fruit
M - Ripe Tridax fruit
N - Ripe Mango fruit
O - Ripe Flamboyant flower

(3aii)
K - Berry
L - Drupe
M - Cypsela

(3aiii)
K - Axile placentation
N - Parietal placentation

(3aiv)
L - Animal dispersal
M - Wind dispersal

(3av)
(PICK ANY THREE)
(i) Presence of pappus or hair-like structures that increase surface area and aid in wind dispersal.
(ii) Lightweight structure allowing it to be easily carried by the wind.
(iii) It is small in size and has aerodynamic shape for efficient travel through the air.
(iv) The achene's seed coat is tough and durable, protecting the seed during its journey through the air

(3avi)
(PICK ANY TWO)
(i)
K: Thin skin
N: Thick skin

(ii)
K: Many small seeds
N: One large seed

(iii)
K: Softer and more watery flesh
N: Flesh is denser and fibrous

(3avii)






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