not sure on these two How does auxin inhibit elongation at high concentrations?

Question

not sure on these two

How does auxin inhibit elongation at high concentrations? It raises pH in the cell to levels that prevent elongation It increases ethylene production, which inhibits elongation It lowers pH in the cell wall space to levels that prevent elongation it leads to cytokinin production, which provides a negative feedback of auxin response It activates ABA production, which prevents elongation What response can be elicited in some plants by shining additional far red light on the plants during the day? The de-etiolation respnse The shade avoidance response A phototropic response Bending in the direction of the far red light source

Explanation / Answer

Q12. It increases ethylene production, which inhibits elongation.

Higher Auxin at high concentrations can induce the synthesis of ethylene. This could cause inhibition of root elongation.

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