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(1ai)
A – Onion (Bulb)
B – Ginger (Rhizome)
C – Irish Potato (Tuber)
D – Potted Bean Seedling (A week old)
E – Potted Guinea-corn Seedling (A week old)
(1aii)
A (Onion) – Vegetative Propagation (by bulb)
B (Ginger) – Vegetative Propagation (by rhizome)
C (Irish Potato) – Vegetative Propagation (by tuber)
(1aiii)
(1aiv)
D (Potted Bean Seedling) – Epigeal Germination
E (Potted Guinea-corn Seedling) – Hypogeal Germination
(1av)
=D (Potted Bean Seedling):
(i) Cotyledons are pushed above the soil surface during germination.
(ii) The hypocotyl elongates and forms a hook that straightens out to pull the cotyledons upwards.
=E (Potted Guinea-corn Seedling):
(i) Cotyledons remain below the soil surface during germination.
(ii) The epicotyl elongates and the plumule emerges above the soil surface.
(1avi)
D (Potted Bean Seedling) – Taproot System
E (Potted Guinea-corn Seedling) – Fibrous Root System
(1avii)
D (Potted Bean Seedling) – Reticulate Venation
E (Potted Guinea-corn Seedling) – Parallel Venation
(1aviii)
A (Onion) – Scale Leaves
B (Ginger) – Rhizome
C (Irish Potato) – Tuber
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(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)
(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)
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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)
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