Question

root of the onion bulb do not grow if the root tip are cut give reason
​

Answer 1

Explanation:

When the root tips are cut, the apical meristem responsible for the increase in length gets removed. The growth of plants occurs only in certain specific regions. In the above picture, the roots of onion bulb grow fast at the tip due to presence of dividing cells of meristematic tissues located only at these points.