Which of the following statements concerning complex multicellular organisms is TRUE?
A)Plants and animals use bulk flow systems to move gasses and nutrients, but fungi and algae do not.
B)Bulk flow systems require specialized organs like a heart to pump nutrients and dissolved gasses deep into tissues that are not in contact with the external environment.
C)Bulk flow systems move substances faster than simple diffusion.

Question

Quizplus · Accepted Answer

Bulk flow systems move substances faster than simple diffusion, which is essential for supplying nutrients and gasses to the cells of complex multicellular organisms that are not in direct contact with the external environment. Plants and animals both use bulk flow systems, but fungi and algae have different mechanisms for moving substances. While animals have specialized organs like a heart to pump fluids, plants use a system of xylem and phloem to transport water, minerals, and sugars.

Which of the Following Statements Concerning Complex Multicellular Organisms Is