(1a)
(i)Specimen A– Clayey Soil.
(ii)Specimen B– A solution of one part of egg albumen mixed with two parts of water in a test tube/beaker.
(iii)Specimen C— Mushroom (freshly plucked).
(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
2dii)
(choose any 2)
i. Vitamin C
ii. Potassium
iii. Amino acid
iv. Magnesium
2ei) green
(2a)
E: Succulent Fruit
F: Berry/Flesh Fruit
H: Legume/Pod
(2b)
E: Parietal Plancentation
F: Axile Plancentation
(1ai)
TABULATE
– TEST: Specimen B + 2drops of iodine solution
– OBSERVATION: No precipitate is found (No reaction is occurring)
INFERENCE: It indicates specimen B contains no starch content
(1aii)
TABULATE
– TEST: Specimen B + 2ml of NaOH(aq) + 3 drops of CuSO4 + shake
– OBSERVATION: The mixture will turn to purple or violet colour
– INFERENCE: Protein is present
(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
(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
(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
(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
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