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.
-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.