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AIIMS 201826 May
Exam
AIIMS
Year
2018
Date
26 May
Subject
Botany
Chapter
Transport in Plants

AIIMS 2018 · 26 May · Botany · Transport in Plants

Assertion : Film forming chemical should not be used for checking...

Assertion : Film forming chemical should not be used for checking transpiration. Reason: Film forming chemicals interrupt transpiration, photosynthesis and respiration.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

D. If both assertion and reason are false.

Step-by-step solution

Film forming chemicals check transpiration by forming a thin film on the transpiring surface. They are sufficiently permeable to carbon dioxide and oxygen to allow photosynthesis and respiration but prevent movement of water vapours through them. These such chemicals can be used as antitranspirants.
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