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*WAEC 2022 BIOLOGY PRACTICAL SPECIMEN*
ReplyDelete*GROUP I*
Specimen A – Weevil-damaged bean seed
Specimen B – Viable bean seed
Specimen C – Dried maize grain soaked in water overnight
Specimen D – Soldier termite (dead)
Specimen E – Honeybee (dead)
Specimen F – Muddy water (in a test tube)
Specimen G – Lower jaw of a herbivore with teeth intact
*GROUP II*
Specimen H – Head of domestic fowl (complete)
Specimen J – Quill feather
Specimen K – Leg of domestic fowl (complete) Specimen L – Head of duck complete)
Specimen M – Leg of duck (complete)
*NOTE:* All specimens can be provided as group specimens for five (5) to ten (10) candidates
All specimens in each group must carry individual labels
(eg A, B, C, D, E, F and G in Group I). It is essential that each candidate should be provided with the following materials:
(i) glass jar cover Petri dish;
(ii) white tiles.
(iii) beaker
(iv) a hand lens/magnifying lens
(v) scalpel/razor blade/knife,
(vi) a pair of forceps
(vii) lodine solution.
(1a)
ReplyDeleteA: Annual crop
C: Annual crop
(1b)
TABULATE
=SPECIMEN A=
(i) Presence of hole
(ii) Brownish in colour
(iii) It is not wet
(iv) Presence of two leaves
=SPECIMEN C=
(i) Absence of hole
(ii) Whitish in colour
(iii) It is wet
(iv) Absence of two leaves
(1c)
(i) Practising of crop rotation
(ii) Spraying with insecticides
(iii) Growing of resistance varieties
(1d)
A: Epigeal
B: Hypogeal
(1ei)
[img]https://i.imgur.com/CusGfrP.jpg[/img]
(1eii)
TABULATE
TEST: C + iodine solution
OBSERVATION: A blue-black colour is observed
INFERENCE: Starch is present
[6/17, 10:46 AM] Naijahero: (2ai)
ReplyDeleteD: Termitarium
F: Hive
(2aii)
TABULATE
=SPECIMEN D=
(i) Absence of eye
(ii) Absence of ocelli
(iii) Absence of pollen
(iv) Absence of stinger
=SPECIMEN F=
(i) Presence of eye
(ii) Presence of ocelli
(iii) Presence of pollen
(iv) Presence of stinger
(2aiii)
Social insect
(2b)
(i) Provision of honey which serves as food
(ii) It serves as an agent of pollination
(2c)
(i) Incisors: For cutting of grass
(ii) Premolar: For chewing
(iii) Molar: For grinding
(2di)
Heterotrops/Herbivorous
(2dii)
(i) Presence of diastema for food propelling
(ii) Presence of incisors for cutting of grass
(iii) Presence of molar and premolar for chewing and grinding grasses
(2e)
(i) Calcium
(ii) Phosphorous
[6/17, 10:52 AM] Naijahero: (3ai)
TABULATE
=SPECIMEN H=
(i) Presence of comb
(ii) Small in size
=SPECIMEN L=
(i) Absence of comb
(ii) Bigger in size
(3aii)
TABULATE
=SPECIMEN K=
(i) Absence of web foot
(ii) Presence of short and sharp claws
=SPECIMEN M=
(i) Presence of web foot
(ii) Presence of long and sharp claws
(3b)
=SPECIMEN H=
(i) Possession of eye for sight
(ii) Possession of comb for sensitivity
=SPECIMEN M=
(i) Possession of web feet to float in water
(ii) Possession of sharp claws to scratch the soil
(3bi)
(i)Grains
(ii)Grass
(3c)
[img]https://i.imgur.com/BpVfSpG.jpg[/img]
(3d)
Woodland
(3e)
H - Pecking
L - Pecking
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