an organism with many cells. another word for multicelled is multicellular. Its more complex.
hope this helps!
Yes
Yes. Pretty much any multicelled organism will be eukaryotic.
Organ, since it is composed if cells, tissues, molecule, and multi-celled organisms. Multi-celled organisms are only composed of one then one cell.
Obelia is a multicellular organism. It belongs to the class Hydrozoa, which consists of colonial organisms made up of individual polyps that are interconnected and function together as a single unit.
Not really. Organisms are either one celled or multicelled. Tri-cells can be formed by uni celled organisms for reproduction.
monera is a single-celled organism. it is very simple and small e.g. bacteria and cyanbacteria
yes
yes
invertabrate
Erm...skin is an organ, not an organism, first of all, and multicelled as well.
Sponges are commonly referred as an organism, because it is made up of more than one cell. Microorganisms normally only have one cell, single-celled organism, so a sponge would be a multicelled organism, or just a normal organism.,
multicelled