WAEC GCE 2023 BIOLOGY (PRACTICAL) ANSWERS(8th december)

(1aii)
I- humerus
II- radius
III- carpals
IV- metacarpils
V- phalanges
VI- ulna

(1b)
X- ball and socket joint
Y- hinge joint
Z- gilding and sliding joint

(1c)
Trace it in the booklet below!

(1di)
Mandible

(1dii)
I. Incisors
II. Diastema
III. Premolar
IV. Polar

(1dii)
I. for cutting
II. Has no function
III. For chewing
IV. For grading

(1ei)
Herbivores

(1eii)
it has no canine

(1eiii)
Rabbit
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(2)


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(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 consewe 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 Sunkon stomata
(iii) Absence of flowers

Under B
(i) Leaves of B are wider not reduced  to spines
(ii)Absence of Sunkon Stomata
(iii)Presence of Flowers

(3di)
(i)Leaves are Reduced to spines
(ii)Thick waxy cuticle is present

(3dii)
(i)Provides vitamins and minerals immunity
(ii)Provides Antioxidant in animal diet and act as mild laxatives
(iii) Provides fibre and energy to animals (Carbohydrate)