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Respiration in Plants — BIOLOGY STD 9 — Question

ICSE BoardEnglish MediumSTD 9BIOLOGYRespiration in Plants2 Marks
Question
In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follows:

What is the function of soda lime in the bottle $'A\ '$ and why is limewater placed in bottle $'B\ '$?
✓

Answer

Soda-lime is kept in bottle $'A\ '$ so as to check the (presence of) passage of$CO _2$ present in bottle $'B\ '$. This is because soda lime has a tendency to absorb $CO _2$ present in the air.
The limewater present in bottle $'B\ '$ shows that no $CO _2$​​​​​​​is entering bottle $C$ with the air passing through bottle $C$.

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