The circulatory system delivers oxygen and nutrients to the cells and transports wastes away from cells.
a. true
b. false

True.

Explanation:

Circulatory system may be defined as the network of the various blood vessels that helps in the transportation of materials inside the body. Circulatory system is also known as cardiovascular system.

The main function of the circulatory system is to delivers the oxygen to each and every cell of the body. The nutrients are transported into the cells via blood and waste materials are transported away from the body. This system is also important to provide immunity to the body.

Thus, the correct answer is option (a).

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands