Exams › NEET › Biology

Highest auxin concentration occurs

1. in growing tips
2. in leaves
3. at base of plant organs
4. in xylem and phloem

Correct answer: in growing tips

Solution

Auxin is produced mainly in shoot apical meristems and young leaves, so its highest concentration is found in growing tips. These regions are the main sites of active growth and hormone synthesis.

Related NEET Biology questions

• Start of synthesis of chlorophyll in a plant seedling is stimulated by
• Typical growth curve in plants is:
• Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in:
• Coiling of garden pea tendrils around any support is an example of:
• Opening of floral buds into flowers, is a type of:
• Movement of leaves of Sensitive Plant, Mimosa pudica are due to:

⚔️ Practice NEET Biology free + battle 1v1 →