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Author Topic: CORRECT: 2023 WAEC GCE BIOLOGY PRACTICAL ANSWERS  (Read 96 times)

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Offline MANDINHO

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CORRECT: 2023 WAEC GCE BIOLOGY PRACTICAL ANSWERS
« on: December 07, 2023, 05:25:00 pm »

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Offline MANDINHO

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Re: CORRECT: 2023 WAEC GCE BIOLOGY PRACTICAL ANSWERS
« Reply #1 on: December 08, 2023, 05:24:33 pm »
BIOLOGY PRACTICAL SOLUTIONS

(1ai)
Bone of the forearm

(1aii)
I - Humerus
II - Radius
III - Carpal
IV - Metacarpal
V - Phalanges
VI - Ulna

(1b)
X - Ball and socket joint
Y - Hinge joint
Z - Gliding/sliding joint

(1c)


(1di)
The mandible ( Lower jaw)

(1dii)
I - Incisor
II - Diastema
III - Premolar
IV - Molar

(1dii)
I - Incisors are used to chop off pieces of food
II - Help to push food from the the front of the mouth to the grinding teeth behind
III - For grinding
IV - For grinding

(1e)
(i) Herbivorous
(ii) It has no canine( presence of Diastema)
(iii) Rabbit

========================================

(2a)
(i) Horn size and shape
(ii) Body size and build
(iii) Body coloration and patterns
(iii) Body coloration and patterns
(iv) Face shape and structure
(v) Muscle development
(vi) Tail length and shape
(viii) Udder size and shape

(2b)
in Tabular form

CATTLE A (Bull)
(i) Bulls are generally larger in size compared to cows.
(ii)  Bulls tend to have a more muscular and robust physique.
(iii) Bulls have higher testosterone levels, which can influence their behavior and aggression.
(iv) Bulls are more likely to have large, curved horns compared to cows.
(v) Bulls have a deeper, more resonant voice compared to cows.

CATTLE B (Cow)
(i) Cows are generally smaller in size compared to bulls.
(ii)  Cows have a more feminine and gentle appearance.
(iii) Cows have lower testosterone levels compared to bulls, leading to less aggressive behavior.
(iv) Cows have a developed udder for milk production.
(v) Cows have a higher-pitched voice compared to bulls.

(2ci)



(2cii)
Monohybrid inheritance

(2ciii)
Law of segregation

(2civ)
All Dd (All patched)

(2d)
(i) Dominant: Cattle B (cow)
(ii) Recessive: cattle A (bull)
========================================

(3a)
A- Cactus
B- Tainum Triangulans

(3b)
TABULATE

=HABITANT=
A-  Desert and
Dry land
B-  Savanna Garden, moist damp Soil

UNDER A
(i)Leaves are Reduced to spine to reduce to water loss
(ii)Thick Stem to conserve water.

UNDER B
(i)Shallow Root
(ii)Has no elaborate water storage


(3c)
TABULATE

UNDER A
(i)Leaf of A are reduce to spine
(ii)Presence of Sunken stomata
(iii) Absence of flowers

Under B
(i) Leaves of B are wide and not reduced  to spines
(ii)Absence of Sunken Stomata
(iii)Presence of Flowers

(3di)
(i) Leaves are are reduced to spine
(ii) Thick waxy cuticle us present
(iii) Thick stem us present

(3dii)
(i) It provides vitamins and minerals that boosts animals immunity
(ii) Provides fibre and energy to animals

(3e)
(i) Kingdom : Plantea
(ii) Division: Tracheophyta
(iii) Class: Angiosperm

Offline MANDINHO

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Re: CORRECT: 2023 WAEC GCE BIOLOGY PRACTICAL ANSWERS
« Reply #2 on: December 08, 2023, 05:53:59 pm »


(3fi)
Magnification = image length/ actual length

= 10cm/200cm
= 0.05

(3fii)
Liliopsida

(3fiii)
(i) Parallel-veined leaves
(ii) Scattered vascular bundles in the stem
(iii) Seeds with a single cotyledon

(3fiv)
Distichous

 

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