Leaves that produce microspores and megaspores are called:

$y=\log \left\{\left(\frac{1+x}{1-x}\right)^{1 / 4}\right\}-\frac{1}{2} \tan ^{-1}(x)$, then $\frac{d y}{d x}$ is equal to

The ratio of diameters of two wires of the same material is $n : 1$. The length of the wires is $4\, m$ each. On applying the same load,the increase in length of the thin wire will be

The line among the following which touches the parabola $y^2=4ax$ is

Which cell organelle can be identified by Sudan Black?

The formula for exponential population growth is