Humans Have Specialized Organ Systems Compared to Smaller Organisms Because

Question

Humans have specialized organ systems compared to smaller organisms because
A)we have to interact with our environment and smaller organisms do not.
B)smaller organisms do not need as many nutrients.
C)our cells are larger.
D)small organisms do not do the same processes than humans do.
E)there is multicellularity and increased size in larger organisms.

Accepted Answer

Larger organisms have more cells that need to be supplied with nutrients and oxygen, and waste products need to be removed more efficiently. Therefore, larger organisms require specialized organ systems, such as the respiratory, digestive, and circulatory system, to perform these functions. Smaller organisms may be able to diffuse nutrients and oxygen directly into their cells, as they have a larger surface area to volume ratio.