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WAEC Biology Practical Specimen 2022 (Updated)

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WAEC Biology Practical Specimen 2022

Below is the WAEC 2022 Biology specimen (Biology APPARATUS)

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 WAEC Biology 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.

WAEC Practical Answers 2021

 

(1b)
(i) Test for starch
(ii) Test for protein (Biurets test)
(1c)
– Additional income is obtained through quality mushrooms
– They contain vitamins and proteins and Laos acts as antioxidants supporting the immune system
(1di)
Fungi
(1dii)
– Eukaryotic organism
– Absence of chlorophyll
– Cell walls made of chitin instead of cellulose
(1diii)
– Molds
– Mildews
– Smuts
– Rusts
– Yeast
(1ei)
Mullosca
(1eii)
– Presence of tentacles
– Possession of soft and unsegmented bodies
– Body is covered by a mantle and she’ll
– They are bilaterally symmetrical
– They are triploblastic with three layers

 

1eii)
– Presence of tentacles
– Possession of soft and unsegmented bodies
– Body is covered by a mantle and she’ll
– They are bilaterally symmetrical
– They are triploblastic with three layers
More WAEC Biology Practical Questions and Answers 2021
(1fi)
– Specimen C (mushrooms) are decomposers breaking down surface waste releasing nitrogen back into the soil in form of ammonium nitrate, a nutrient essential for plant survival
(1fii)
Saprophytic mode of nutrition

====================================
(2a)
E: Succulent Fruit
F: Berry/Flesh Fruit
H: Legume/Pod

(2b)
E: Parietal Plancentation
F: Axile Plancentation
(2c)
E: Human
F: Animal
H: Explosive Mechanism
(2di)
Specimen E attract birds, squirrels, and other small mammals. Consumption of the fruit will lead to dispersal of the seeds in feces (by human)
(2dii)
(i)Vitamin C
(ii)Magnesium
(2ei)
Green
(2eii)
It signify that they are still young
(2fi)
Marginal placentation
(2fii)
WAEC Biology Practical Questions 2021 and Answers Continues
=====================
(4a)
TABULATE
– Specimen P-
– Test: 2 drops of specimen P in water
– Observation time(seconds): 3-4 seconds before it dissolves
– Medium of spread: Water
– Sense organ: Eye
-Specimen Q-
– Test: Teaspoon of specimen Q + water
– Observation time(seconds): Dissolves within 65 seconds
– Medium of spread: Water
– Sense organ: Eye
-Specimen R-
– Test: Cut section of specimen R
– Observation time(seconds): 2 seconds or almost immediately
– Medium of spread: Air
– Sense organ: Nose
(4b)
Osmosis
4c)
(i)
– Increase in temperature
– Difference in concentration
(ii)
– Molecular size
– Increase in temperature
(iii)
– Increase in temperature
– Difference in concentration
(4di)

(4dii)
It is Whorl
(4diii)
– Loop
– Whorl
– Arch/Compound
(4div)
– Crime detections
– Identification of individuals
– Genetic variation in man
(4dv)
Discontinuous variation

 

 

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