Question

What is not true for phytohormones?

• A. They are signal molecules.
• B. Their action is always localized.
• C. They are required in very low concentrations.
• D. They may not function at far distance.

Answer 1

The correct option is B Their action is always localized.

Phytohormones are plant hormones. These are a diverse set of chemicals which regulate plant growth and metabolism, in extremely minute concentrations. Their action may be localized or at remote places. These chemicals have been known to be transported in the vascular system of plants.

Therefore, the correct answer is option B.