A plant has undergone a robust phase of growth; however, the roots can no longer provide enough nutrients to the plant. What signal(s) can the roots send to the rest of the plant that will prevent new branches from forming?

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Quizplus · Accepted Answer

Strigolactone is a plant hormone that inhibits branching and stimulates root growth. If the roots are unable to provide enough nutrients, they can signal the rest of the plant to stop branching through the release of strigolactones. This helps the plant conserve energy and focus on growing stronger roots to absorb more nutrients.

A Plant Has Undergone a Robust Phase of Growth; However