(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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