Same chapter3 marksDifficulty: Medium
Name the parts of a bean seed and state the function of each.
Seeds: Structure and Germination
3 marksDifficulty: Medium
Describe an experiment to show that oxygen is necessary for germination.
Original Khojo Papers practice question — not from a past board paper.
Answer
Two flasks are taken, each with soaked seeds on damp cotton wool. In the first the air is left as it is; in the second a small vessel of pyrogallol solution absorbs the oxygen and the flask is sealed. Both are kept in the dark at the same temperature. The seeds in the first flask germinate and those in the second do not, showing that oxygen is necessary.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Everything except the oxygen supply must be the same in the two flasks for the conclusion to hold.
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