For a multicellular organism to have evolved from a unicellular ancestor,what new feature must have been present that was not necessary for unicellular life-forms?
A) A mechanism for cell division
B) Adhesion molecules on the surfaces of the cells
C) Specialization of cellular functions
D) Chloroplasts
E) A mechanism for cell movement

Question

Quizplus · Accepted Answer

Adhesion molecules on the surfaces of the cells are necessary for multicellular organisms to allow cells to stick together and form tissues, which is not required for unicellular life-forms.

For a Multicellular Organism to Have Evolved from a Unicellular