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Science · 2024 · 2 marks
CBSE 2024 · Region 4 · Set 1 · Q23
(a) We need to water the soil in plants on a regular basis. But it ultimately reaches the leaves of the plant. Explain how this takes place.
(a)
We need to water the soil in plants on a regular basis. But it ultimately reaches the leaves of the plant. Explain how this takes place.
OR
(b)
Name the type of nutrition exhibited by Amoeba. Explain how food is taken in and digested by this organism.
Marking-scheme solution
(a)
When water is lost through stomata in the leaves by transpiration, it creates a suction force/transpiration pull. Due to which water is pulled up through xylem of the roots to the leaves.
OR
(b)
Heterotrophic /Holozoic Nutrition
Amoeba takes in food using temporary finger-like projections/pseudopodia of the cell which fuse over the food particle forming a food vacuole. Inside the food vacuole complex substances are broken down into simpler substances. /
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CBSE Class 10 Science past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.