Cytokinins


 
 
Concept Explanation
 

Cytokinins

Cytokinins are chemicals which promote cytokinesis (cell division). They are produced in dividing cells throughout the plant. In mature plants, cytokinins are produced in the root tips and are transported to the shoots.

Functions

  • It helps in breaking dormancy and regulating phloem transport.
  • As it causes cell division therefore it is also involved in synthesis of RNA and DNA.
  • It also causes cell enlargement.
  • It delays senescence in plants.
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    Sample Questions
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    Question : 1

    Plant hormone essential for cell division is _______________

    Right Option : D
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    Explanation
    Question : 2

    Cytokinins are known to

    Right Option : B
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    Explanation
    Question : 3

    Which group of hormones regulate cell division :

    Right Option : B
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    Explanation
     
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