Question

The concentration of auxin is highest in _______

• A. leaves
• B. stem
• C. growing tips
• D. vascular bundles

Answer 1

Answer:

C. growing tips

• The concentration of auxin is found to be highest in growing tips as they are the source of the hormone.

• It further spreads to leaves & stem. Vascular bundles have no role in the activity of PGRs.