A tissue with spiral thickening in the cell wall capable of absorbing water from air is known as

Which of the following statements is not true for stomatal apparatus?

If a stem is girdled

Histogens are component of or The histogens are differentiated in

Plants require water for their survival. But when watered excessively, plants die. Discuss.

Palm is a monocotyledonous plant, yet it increases in girth. Why and how ?