2019 JAN/FEB WAEC GCE Biology Practical Questions and Answers

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👑 2019 WAEC GCE BIOLOGY PRACTICAL ANSWERS👑

100% VERIFIED BIOLOGY PRACTICAL ANSWERS

(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
===============================

(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

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(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)
The exchange of oxygen and carbon dioxide in the leaf of a vascular plant (as well as the loss of water vapor in transpiration) occurs through pores called stomata. Normally stomata open when the light strikes the leaf in the morning and close during the night. The guard cells control the opening and closing of the stomata.

(2f)
(i) Modification: Leaf tendrils
Example: Naravelia

(ii) Modification: Leaf spines
Example: dagger plant(Yucca)

(iii) Leaf roots
Example: Salvinia
================================

(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

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