NECO 2024 Biology practical– June/July Expo

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NECO BIOLOGY PRACTICAL

 NUMBER ONE

(1ai)
Specimen A - onion (bulb)
Specimen B - Ginger (Rhizome)
Specimen C - Irish potato (tuber)
Specimen D - Potted bean seedlings (A week old)
Specimen E - Maize grain

(1aii)
Specimen A - By bulbs
Specimen B - By Rhizomes
Specimen C - By tubers

(1aiii)
Check the diagram below 

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

(1av)
-Specimen D-
(PICK ANY TWO)
(i) The cotyledons are brought above the ground during germination.
(ii) The hypocotyl elongates and arches, forming a hook.
(iii) The hook grows upward until it reaches the surface of the soil.
(iv) The cotyledons then spread out and become the first leaves of the plant.

-Specimen E - 
(PICK ANY TWO)
(i) The cotyledons remain below the ground during germination.
(ii) The epicotyl elongates and arches, forming a hook.
(iii) The hook grows upward until it reaches the surface of the soil.
(iv) The cotyledons then spread out and become the first leaves of the plant.

(1avi)
Specimen D - Tap root system
Specimen E - Adventitious root system

(1avii)
Specimen D - Pinnate venation
Specimen E - Parallel venation

(1aviii)
Specimen A - scales
Specimen B - Rhizome
Specimen C - Eyes
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 NUMBER TWO

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

(2aii)
(PICK ANY ONE)
(i) Protects the spinal cord
(ii) Provides a smooth surface for the skull to rotate on
(iii) Allows for the attachment of muscles that move the head
(iv) Helps to distribute weight evenly across the spine

(2aiii) 
-Specimen G-
Located at the top of the spine, just below the skull

-Specimen H-
Located in the middle of the spine, between the thoracic vertebrae and the sacral vertebrae

(2aiv) 
Occipital condyles of the skull

(2av)
Check the diagram below

(2avi)
Mammalia

(2avii) 
-Specimen I-
(PICK ANY THREE)
(i) Thick, fleshy stem for water storage
(ii) Small, spine-like leaves to reduce water loss
(iii) Shallow, wide-spreading roots for water absorption
(iv) Thick, waxy coating on surface to reduce water loss
(v) Ability to store water in tissues for drought survival

-Specimen J-
(PICK ANY TWO)
(i) Large, flat surface area for sunlight and nutrient absorption
(ii) Long, trailing stem to reach water surface
(iii) Spongy, air-filled tissue for buoyancy
(iv) Small, hair-like roots for nutrient absorption
(v) Waxy coating on leaves to prevent water loss
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(3ai)
Specimen; K-Ripe Tomato fruit

Specimen; L - Ripe Palm fruit

Specimen; M-Ripe Tridax fruit

Specimen; N - Ripe Mango fruit

Specimen; O-Ripe flamboyant flower.

(3aii)
Specimen K; Berry

Specimen L;  Berry 

Specimen M; Cypsela 

(3aiii)
Specimen K; Axile
Specimen N; Axile 

(3aiv)
Specimen L; Dispersal by Animal 

Specimen M; Dispersal by  wind 

(3av)
(i)Hooks 
(ii)Lightweight 
(iii)Sticky surface 

(3avi)
Specimen K
(i)Small sized 
(ii)Red coloured 

Specimen 
(i)Big sized
(ii) Yellow coloured 

(3avii)
[ BIOLOGY PRACTICAL
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COMPLETED 
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