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Science · 2025 · 3 marks
CBSE 2025 · Region 3 · Set 1 · Q29
On the basis of the characteristics of the processes given in the brackets in each case, differentiate between the following: (a) Products of…
On the basis of the characteristics of the processes given in the brackets in each case, differentiate between the following :
(a)
Products of breakdown of pyruvate in aerobic and anaerobic respiration in human beings (product(s) of the processes)
(b)
Respiration and photosynthesis in plants (gas released)
(c)
Respiration in terrestrial animals and fishes (organs involved)
Marking-scheme solution
(a) Aerobic - carbon dioxide+water Anaerobic - Lactic Acid
(b) Respiration -carbon dioxide Photosynthesis - oxygen
(c) Terrestrial Animals - lungs / skin Fish- Gills
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CBSE Class 10 Science past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.