What is the plant body of algae called?

The transformed equation of $x^2+y^2=r^2$ when the axes are rotated through an angle $36^{\circ}$ is

What are the products formed when chlorine is passed through an aqueous hypo solution?

Which one of the following statements is wrong?

The ratio between kinetic and potential energies of a body executing simple harmonic motion,when it is at a distance of $\frac{1}{N}$ of its amplitude from the mean position is

The functional kidney of a frog tadpole is