Identify the plant shown in the given figure.

Which of the following is an incorrect pair regarding lichens?

If $\frac{d^2y}{dx^2} + \sin x = 0$,then the solution of the differential equation is:

Which of the following organisms live in extremely salty areas?

The temperature in $K$ at which $\Delta G = 0$ for a given reaction with $\Delta H = -20.5 \ kJ \ mol^{-1}$ and $\Delta S = -50.0 \ J \ K^{-1} \ mol^{-1}$ is: