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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Given below are two statements – Statement I: Rooting co-factors occur as a natural substance which appear to act synergistically with indole acetic acid in promoting rooting. Statement II: Rooting co-factors protect the naturally occurring auxin (indole acetic acid) from destruction by the enzyme indole acetic acid oxidase. Choose the correct answer from the options given below – (RJ ARO Horti 2022)

    Question: Given below are two statements – Statement I: Rooting co-factors occur as a natural substance which appear to act synergistically with indole acetic acid in promoting rooting. Statement II: Rooting co-factors protect the naturally occurring auxin (indole acetic acid) from destruction by the enzyme indole acetic acid oxidase. Choose the correct answer from the options given below – (RJ ARO Horti 2022)

    Options:

    (1) Both statement I and statement II are true
    (2) Both statement I and statement II are false
    (3) Statement I is true but statement II is false
    (4) Statement I is false but statement II is true

    ✅Explanation:
    -Statement I is true. Rooting co-factors are naturally occurring compounds that enhance the effect of auxins (like indole acetic acid or IAA) in promoting root formation in plant cuttings.
    -Statement II is also true. Some rooting co-factors act by inhibiting the activity of indole acetic acid oxidase (IAA oxidase), an enzyme that breaks down IAA.
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