Question

Which of the following plant function is not controlled by auxins?

• A. Apical dominance
• B. Photosynthesis
• C. Photoperiodism
• D. Growth

Answer 1

The correct option is C Photoperiodism

Auxin is a plant hormone which is involved in various physiological processes of plants. It induces growth in plants. It also regulates apical dominance as it promotes stem elongation and inhibits growth of lateral buds. It is produced at the tip of stem and is involved in process of phototropism. Photoperiodism is the physiological reaction like flowering in plants that depends on the length of day and night.

Thus, the correct answer is option C.