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Science · 2022 · 3 marks
CBSE 2022 · Region 4 · Set 2 · Q13
Draw a diagram showing flow of energy from solar input to a food chain having four trophic levels in an eco system. List two inferences that can be drawn from the energy flow diagram.
Marking-scheme solution
Diagram
(Can be shown with the help of food chain starting from sun)
Inferences:
(Can be shown with the help of food chain starting from sun)
Inferences:Flow of energy is unidirectional
Sun is the ultimate source of energy.
Energy available at each trophic level gets diminished progressively due to loss of energy at each level.
Every food chain starts with producers.
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CBSE Class 10 Science past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.