Question

Multicellular organisms have five levels of organization ranging from simplest to most complex. The simplest level is the cell. The most complex level is the organism. Consider the examples. Which one correctly gives an example of the other three levels in order from simplest to most complex?
A) blood → cardaic muscle → heart
B) heart → cardiovascular system → organism
C) leukocytes (white blood cells) → veins → spleen
D) smooth muscle → arteries → cardiovascular system
Eliminate

Answer 1

B)heart➡️cardiovascular system ➡️organism

Answer 2

Answer:

D) smooth muscle --> arteries --> cardiovascular

Explanation:

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