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Підписники
Немає даних24 години
-57 днів
-2230 день
Архів дописів
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Physics Pract
(1bi)
The resultant force is the single force that represents the combined effect of all the individual forces acting on an object.
While
The equilibrant force is a single force that, when applied to an object, balances out the effects of all the other forces acting on the object, resulting in equilibrium.
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NECO 2024 EXPO EXAMLOADEDCEO
BIOLOGY PRACTICAL ANSWERS
(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
(2ai)
Specimen; F - Pigeon's head with the neck
Specimen; G- Atlas vertebra of a Rabbit
Specimen; H- Lumbar vertebra of a Rabbit
Specimen; I-Cactus plant
Specimen; J - Water lettuce
(2aii)
To support the head and allow for flexibility and movement of the neck.
(2aiii)
Specimen G (Atlas vertebra):
located in the cervical region (neck) of the rabbit.
Specimen H (Lumbar vertebra): Located in the lower back region of the rabbit.
(2aiv)
Occipital bone
(2av)
Diagram
(2avi)
Mammalia.
(2avii)
Specimen I; Cactus plant
(i) Stem succulence (ability to store water in the stem)
(ii) Spines (reduce water loss through transpiration)
(iii) Deep roots (access water deep in the soil)
Specimen J; Water lettuce
(i) Floating leaves (allow the plant to stay afloat on the water surface)
(ii) Long stems (allow the plant to absorb nutrients from the water)
(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)
Diagram
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(3a)
=Specimen I (Onion Bulb): Allium cepa
=Specimen J (Yam Tuber): Dioscorea spp. ( various species)
=Specimen K (Cassava Tuber): Manihot esculenta
=Specimen L (Ginger): Zingiber officinale
(3b)
=Specimen I (Onion bulb); Bulb division
= Specimen J (Yam Tuber): Stem cuttings or setts
= Specimen K (Cassava Tuber): Stem cuttings
= Specimen L (Ginger): Rhizome cuttings
(3c)
(i) Yam beetles
(ii) Yam nematodes
(3d)
(i) Peeling and grating the tubers
(ii) Fermenting the grated cassava for 2-3 days
(iii) Frying the fermented cassava to produce garri
(3e)
Onion (Specimen I): Biennial plant (completes its life cycle in two years)
(3f)
It is used to treat various ailments such as nausea and digestive issues.
