Fungi lacks the ability to produce their own food because they do not have chloroplast which is needed to obtain energy from the sun and convert it into food. Also fungi lack ability to fix nitrogen which has to be incorporated into their food. They also can not fix carbon and utilize it to produce food. Because of these they have to depend on dead organic matters for food.
Suicide is the only answer to this god for saken lifetime
It's the nucleus as it contain the DNA
Most likely, yes! He most likely has inherited features that are similar to his uncle which can be through genes.