If the tip of a sugarcane plant is removed from the field,even then it keeps on growing in length. It is due to the presence of

If the tip of a sugarcane plant is removed from the field,it still continues to grow in length. This is due to the presence of:

Identify the simple permanent plant tissue with the following descriptions and also mention their location in the plant body:
$(a)$ Cells have irregular wall thickenings.
$(b)$ Tissues with large intercellular spaces and cells having large air cavity.
$(c)$ Cells are long,narrow,and dead in nature.

Differentiate the following activities on the basis of voluntary $(V)$ or involuntary $(IV)$ muscles:
$(a)$ Jumping of a frog
$(b)$ Pumping of the heart
$(c)$ Writing with hand
$(d)$ Movement of food in your intestine

Select the incorrect sentence.

The girth of the stem or root increases due to