WELCOME TO ONLINE ANSWERS SUBSCRIPTION For Waec 2023 Biology Practical Solution Expo

Schedule Time;
Tuesday, 16th May, 2023
Biology 3 (Practical) (Alternative A) – 09:30am – 11:30am (1st Set)

(1a)
=SPECIMEN A=
(i) Small in size
(ii) Soft shell
(iii) Pale yellowish

=SPECIMEN B=
(i) Large in size
(ii) Hard shell
(iii) Brownish

(1c)
A – Chordata
B – Angiosperm

(1cii)
A -Pisces
B – Aves
C – Mammalia
D – Dicotyledon

(1d)
It helps in reproduction

(1e)
TABULATE

=OBSERVABLE FEATURES=
(i) Air Space
(ii) Yolk
(iii) Albumen

=FUNCTIONS=
(i) Respiration
(ii) It provides nutrition
(iii) It serves as reservoir

(1f)
A – Aquatic
B – Terrestrial
D – Terrestrial
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(2a)
F – Dicotyledon
G – Monocotyledon

(2b)
F – It has two seed leaves
G – It has one seed leaf

(2c)
F – Tap root
G – Fibrous root

(2d)

(2dii)
Petiole – It attracts the leaf to the rachis
Leaflet – For photosynthesis
Midrib – It hold the Vien

(2e)
(i) It serves as cover crop
(ii) It serves as food to livestocks
(iii) It prevent erosion

(2fi)
(i) Possession of node
(ii) Possession of adventitious root
(iii) Possession of scale leaf
(iv) Possession of internode

(2fii)
For reproduction

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(3ai)
L – Hesperidium
M – Drupe
N – Berry

(3aii)
L – Perennial
M – Perennial
N – Annual

(3bi)
TABULATE

=SPECIMEN L=
(i) Round and small in size
(ii) Axile placentation
(iii) Yellowish in colour
(iv) Succulent

=SPECIMEN M=
(i) Large and elongated
(ii) Parietal placentation
(iii) Brownish in colour
(iv) Hard

(3bii)
TABULATE

=SPECIMEN L=
(i) Yellow in colour
(ii) Big in size

=SPECIMEN N=
(i) Reddish in colour
(ii) Small in size

(3c)
(i) They both have axile placentation
(ii) Both have mesocarp
(iii) Both have seed

(3d)

(3e)
(i) Disposal by seed
(ii) Axile

(3f)
It serve as food