According to the cell theory, what is a Similarities of all single celled and multicellular organism? a)
Both are composed of cells

b)
Both have tissues and organs

c)
Both have cells with rigid cell walls

d) Both are visible to the naked eye

Both are composed of cells?

Explanation:

* Tissues and organs are made up of multiple cells so they wouldn’t be present in single celled organisms

* Not all multicellular organisms have rigid cell walls (animal cells only have a cell membrane)

* Most single celled organisms are not visible to the naked eye

the correct answer is b