2024 WAEC BIOLOGY: Gce Waec Biology 3 (Alternative to Practical Work) (2272)
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Hg(1ai)
A - Hind limbs
B - Fore limbs
(1aii)
I - Pelvis
II - Femur
III - Patella
IV - Tibia
V - Fibula
VI - Ulna
VII - Scapula
VIII - Clavicle
IX - Humerus
X - Ulna
(1b)
(i) Ball and socket joint
(ii) Hinge joint
(iii) Ball and socket joint
(iv) Hinge joint
(1c)
I - Hips
III - Knee
VII - Dhoulder
(1d)
Tabulate btwn C & D:
Specimen C:
(i) Possession of no tail
(ii) Possession of long and strong leg with bent shape
(iii) Presence of Short neck
(iv) Possession of digits
(v) The nose is pointed
Specimen D
(i) Possession of tail
(ii) Possession of straight and short hind limb
(iii) Presence of long and extended neck
(iv) Absence of digits
(v) The nose is flat
(1ei)
D will run faster
(1eii)
D is adapted to running on both fore and hind limbs while C runs with Only Hind limbs.
(1f)
(i) Kingdom:
C - Animalia
D - Animalia
(ii) Phylum:
C - Chordata
D - Chordata
(iii) Class:
C - Mammalia
D - Mammalia
(3ai)
A - Bear
B - Cactus plant
C - zebra
D - preying martia
E - chameleon
F - Tree plant
(3aii)
A- Aquatic (cold region)
B - Terrestrial
C - Terrestrial
D - Aboreal
E - Aboreal
For - Aquatic
(3bi)
tabulate
Specimen A
Biological feature - fur
Function - to maintain their body temperature
Specimen B
Biological feature - thorn
Function - prevention against predators
Specimen C
Biological feature -
Functions -
Specimen D
Biological feature - Skin
Function - camouflage use for the prevention from prey
(3bii)
Specimen B: Thorn's
Specimen D: Wings
SpecimenE: Skin
(3c)
Tabulate
Under Specimen B
(i)presence of Thorn's
(ii)absence of leaves
Under Specimen F
(i)Absence of thorns
(ii)presence of leaves
(3di)
Organisms F need enough water to germinate and survive
(3dii)
Organism F does not passes any feature which can prevent it from predators
(3e)
(i)Reptilia - bear
(ii)mammalia - zebra
(iii)dicotyledonea - tree plant
[Corrected 2bi and 2di]
*(2bi)*
*For reproduction*
*(2di)*
*Nitrogen*
--------------------
(2a)
Y - Stem of vascular plant
Z - Carnivorous plant
*(2bi)*
*For reproduction*
(2bii)
(i) It attract the pollination
(ii) It help for photosynthesis
(2ci)
I - Apex
II - Leaf blade
III - Leaf margin
IV - Midrib
V - Petiole
VI - Stipule
(2cii)
II - It connects the network venation
IV - It contain chloroplast for photosynrhesis
V - It attaches the leaves to the stem
VI - It helps to connect the blade
*(2di)*
*Nitrogen*
(2dii)
(i) Autotrophic feeding
(ii) Heterotrophic feeding
(2e)
They obtain the gases they need through their leaves. They require oxygen for respiration and carbon dioxide for photosynthesis. The gases diffuse into the intercellular spaces of the leaf through pores, which are normally on the underside of the leaf - stomata.
(2f)
Tabulate
(i)Leaf spines (eg.Zizyphus)
(ii)Phyllode (eg. Acacia)
(iii)Pitcher (Nepenthes)
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