Yes, multicellular means that it is made up of more than one cell. cells are so tiny that you have to use a microscope to see them. All living things are made up of cells.
Yes they are.
Most certainly. A single-celled organism can never be seen with the naked eye.
some plants are multicelluar, most plants aren't
It is multicelluar becase it is made up of more than one cell.
Yes
Bacterium.
Yes.
Unicellular
yes
no they are not
Yes.
yes