Sclerenchyma cells are the permanent tissue present in plants. They provide rigidity and rigidity to the plant and are made up of dead cells. This tissue is present in the veins of leaves, around the vascular bundles in the stems ...

Vinegar is a homogeneous mixture of water and acetic acid because its constituent are uniformly distributed throughout the bulk of medium.

Arsenic is a metalloid because it shows properties of both metal and non-metal.

We know that acceleration is related to mass by the expression, a = F/m. Now, if both force and mass are doubled, Acceleration = a₁ = 2F/2m (i.e., acceleration will, remain the same).

Robert Hooke in 1665, while examining a thin slice of cork, discovered dead cells. He used the word cell, which is derived from Latin, that means ‘ a little room’ to describe these units of cork slice.