Short answerModerate0.5 marks
3(b)
The diagram of an apparatus given below demonstrates a particular process in plants. Study the same and answer the questions that follow: The diagram of an apparatus given below demonstrates a particular process in plants. Study the same and answer the questions that follow:
Name the apparatus.
Topic: Ganong’s potometer
Previous-year question practice database
Answer
Exam answer
GANONG’S POTOMETER.
Explanation
Identify it from its parts: a CUT SHOOT sealed into a tube of water, a graduated CAPILLARY TUBE containing an AIR BUBBLE, and a reservoir for resetting the bubble.
A potometer measures the rate at which a cut shoot TAKES UP water, and that is used as a measure of the rate of TRANSPIRATION.
The name is worth giving in full — GANONG’S potometer — since that is the form the marking scheme uses.
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