2023 WAEC Biology Practical Answers [16th May]
Tuesday, 16th May, 2023
Biology 3 (Practical) (Alternative A) – 09:30am – 11:30am (1st Set)
2023 WAEC BIOLOGY PRACTICAL ANSWERS [16th MAY, 2023]
(PICK ANY THREE)
=SPECIMEN A=
(i) Small in size
(ii) Soft shell
(iii) Transparent or translucent, with a pale yellow or amber tint
(iv) Spherical in shape
=SPECIMEN B=
(i) Large in size
(ii) Hard shell
(iii) Brownish
(iv) Oval shape
(1b)
-Specimen A is external and Oviparous
-Specimen B is internal and Oviparous
-Specimen C is internal and Viviparous
(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
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)
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
L: Berry
M: Drupe
N: Berry
(3aii)
L: Perennial
M: Perennial
N: Perennial
(3bi)
L: Few seeds
M: Single large seed
L: Thick leathery epicarp
M: Thick fibrous husk
L: Juicy mesocarp
M: Fibrous mesocarp
L: Axile placentation
M: Parietal placentation
(3bii)
L: It has few seeds
N: Have many seeds
L: It has leathery epicarp
N: Smooth epicarp
L: Juicy and fleshy mesocarp
N: Succuent mesocarp
L: Large endocarp
N: Thin endocarp
(3c)
(i) Both specimen contains seed
(ii) Both specimen fleshy mesocarp
(iii) Both specimen soft endocarp
(i) By animal
(ii) Axle
(3f)
(PICK ANY ONE)
-It is used as food spices
-It is an important cash crop
-It is a rich source of vitamin C
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