yes
yes
invertabrate
multicelled
Multicellular
single-celled
either they are unicellular, or they are multicellular without specialized tissues.
It is multi celled.
The chlorophyta and rhodophtya multicelled seaweed of the oceans.
Yes. Pretty much any multicelled organism will be eukaryotic.
Yes
because it is the cell wall
Most protista are unicellular, but not all are. Google Chlorophyta and Rhodophyta for examples of multicelled protista.