Question

Substances which originate at the tip of the stem and control growth elsewhere are ______. 

विकल्प

• food material

• auxins or hormones

• vitamins

• enzymes

Answer 1

Substances which originate at the tip of the stem and control growth elsewhere are auxins or hormones.

Explanation:

Cells in one area of the plant secrete hormones, which then act on other areas of the plant.