A possible reason for the transition of algae from unicellularity
to multicellularity would be the evolution of multicellularity allowed algae to
develop traits that keep them close to the land and thus a source of nutrients.
The correct answer between all the choices given is the last choice. I
am hoping that this answer has satisfied your query and it will be able to help
you in your endeavor, and if you would like, feel free to ask another question.
Answer:
Periosteum.
Explanation:
Periosteum is an extremely thin region of non-calcified tissue on the exterior of bones. It covers the entire surface of every bone in the body, with the exception of the joint-forming ends of bones where cartilage forms the bone’s outer layer.
Answer: Swim bladders of fish at depth help maintain buoyancy by regulating gas levels.
