Does the load at where Pmp of a solar panel is oberved change with temperature?
Say, Pmp of a solar panel that has a temperature of 25 °C is observed at a load of 20 KΩ. Will the load where the solar panel has its Pmp change at a different temperature, and if so, will it increase or decrease?


Without any knowledge of solar panels you can deduce that


If Pmp and Vmp decrease with increasing temperature and 
Imp remains much the same, then 
As Rmp = Vmp/Imp, R mp must decrease with increasing temperature.