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BIOLOGICAL PRACTICAL[MORNING] #1000

LITERATURE [AFTERNOON] #1500

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WAEC UP NEXT THURSDAY 15TH MAY 2025

BIOLOGICAL PRACTICAL[MORNING] #1000

LITERATURE [AFTERNOON] #1500

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*WAEC BIOLOGY PRACTICAL🇳🇬*

*NUMBER THREE*

(3ai)
(IN TABULAR FORM)
(i) Test: Biuret test for protein
(ii) Observation: Violet or purple coloration
(iii) Inference: Protein is present

(3aii)
Biuret test

(3aiii)
Millon's test

(3aiv)
(i) Milk
(ii) Meat

(3b)
(IN A TABULAR FORM)
(i) Test: Biuret test
(ii) Observation: No color change
(iii) Inference: Protein is absent

(3c)
(IN A TABULAR FORM)

-Five Observable Parts Of Specimen J-
(i) Eggshell
(ii) Egg white (albumen)
(iii) Egg yolk
(iv) Chalaza
(v) Egg membrane

-One Function of Each of the Parts-
(i) Protects the internal contents from damage and microbes
(ii) Provides water and protein for the embryo
(iii) Supplies nutrients (fats and vitamins) to the embryo
(iv) Holds the yolk in position within the egg
(v) Serves as an additional protective barrier

(3d)
(i) Kingdom: Animalia
(ii) Phylum: Chordata
(iii) Class: Aves

(3e)
(PICK ANY TWO)
(i) It serves as a rich source of high-quality protein in human diets.
(ii) It is used in baking and food industries (e.g., cakes, pastries, mayonnaise).
(iii) It provides income to poultry farmers and egg sellers.
(iv) It is used in the production of vaccines (e.g., for influenza).
(v) It is used in laboratory experiments and biological research.
(vi) It contributes to job creation in poultry production and distribution.
(vii) It is used in cosmetics and hair treatment products (e.g., egg masks).

(3f)
(PICK ANY TWO)
(i) Poultry farms
(ii) Domestic backyards
(iii) Open rural compounds
(iv) Forests (for wild birds)
(v) Water bodies (for ducks and geese)
(vi)Agricultural villages
(vii) Aviaries or bird sanctuaries

(3g)
(PICK ANY THREE)
(i) Domestic fowl (chicken)
(ii) Duck
(iii) Turkey
(iv) Goose
(v) Guinea fowl
(vi) Quail
(vii) Ostrich

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