The layer of cells outside the phloem meant for giving rise to the root branches is called

The presence of a nitro group in a benzene ring.....

Silviculture is the cultivation of which of the following?

The inverse point of $(1,2)$ with respect to the circle $x^2+y^2-4x-6y+9=0$ is

The force required to move a body up a rough inclined plane is double the force required to prevent the body from sliding down the plane. The coefficient of friction,when the angle of inclination of the plane is $60^{\circ}$,is

The area (in square units) of the region bounded by the curves $x=y^2$ and $x=3-2y^2$ is