Answer
a) Higher.
b) No.
Work Step by Step
a) We know in such processes the temperature falls during an adiabatic expansion and rises during an adiabatic compression.
In the given figure there is an adiabatic compression process since $V_f\lt V_i$, so the temperature rises.
This means that the $\bf final\; temperature$ of the system is $\bf higher$ than the $\bf initial\; temperature$.
b) No heat exchange during adiabatic processes. So, $\bf no$ heat energy is added or removed from this system.
