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Question
Classify according to food-type.
Buffalo
Options
carnivore
herbivore
scavenger
omnivore
decomposers
parasite
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Solution
herbivore
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Excess intake of fats is harmful to the body because it causes obesity. Would it be harmful to the body to take too much of proteins or vitamins in the diet?
Is ‘nutrition’ a necessity for an organism? Discuss.
Assertion (A): Amoeba takes in food using finger like extensions of the cell surface.
Reason (R): In all unicellular organisms, the food is taken in by the entire cell surface.
Take a potted plant with broad leaves. Take two strips of black paper and cut out a small square in the centres. Cover a part of two leaves with these papers and secure them with paper clips Figure. Keep the plant in sunlight for 2–5 days. Observe the difference in the colour of the covered and the uncovered portions on the leaf. Perform iodine test on this leaf. Did the two parts show different results? Now take second leaf. Remove the strip and expose the covered part to the sunlight for 2–3 days and do the iodine test again. Describe your observations.
Try growing a sweet potato just in water. Describe your experiment and observations.
