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ICSE Class 10 Answered

State true or false, if false rewrite the correct statement: The pH of the guard cells increase during daytime.
Asked by nidhisingh200418 | 09 Feb, 2020, 05:20: PM
answered-by-expert Expert Answer
  • The opening and closing of stomata depends upon the turgidity of the stomata.  
  • When guard cells become turgid, stomata open and while guard cells become flaccid stomata close.
  • Guard cells contain chloroplast hence they synthesize food by photosynthesis, using carbon dioxide during day time.
  • Thus, due to lack of carbon dioxide, ​the pH value of the cell increases (7.5 pH).
Answered by Sheetal Kolte | 10 Feb, 2020, 11:46: AM

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