It depends on the legislation of the country you are in.
I believe so, but under certain cercumstances,.. have you been upright in your current bills?
I can only answer for Massachusetts, but I think you can. The landlord has a right of entry, but he should get the permission of tenant, and the tenant has a right to be there at the time. If the landlord needs to get in during an emergency, perhaps he should be calling the police.
If it is illegal, then you can be arrested and can be charged just like the person who owns the plant.
Falsely arrested and jailed
You don't. I don't know of any jurisdiction where that is illegal. He's a landlord, not ICE.
yes
no
A landlord cannot make you leave your dwelling or threaten to have you arrested if you don't, without proper due process (court proceedings). A state of emergency does not give the landlord - in most states - any special privileges or rights.
Ah, yeah! Your lease does not allow you to do illegal activities.
There is nothing illegal about the alphabet
I would guess that to be illegal anywhere.