Question

Two potted plants A and B are covered separately with bell-jars. A watch glass with a chemical to absorb carbon dioxide is kept inside the bell-jar where plant A is kept. a) Name the chemical which is kept in the watch glass. b)State the reason why bottom of the bell-jars must be sealed to the glass plates on which they are kept and how can it be sealed. c) Which plant will show a positive response to the starch test?

Answer 1

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Answer 2

Answer:

Explanation:

A) the chemical is potassium hydroxide

B) it is used to absorb CO2 present in the jar

C) bottom must be sealed so that Co2 from outside can not enter the jar