Question

Which is not an important function of the vertebrate circulatory system?
A. Transport of nutrients and respiratory organs
B. Regulation of body temperature
C. Protection of the body by circulating antibodies
D. Removal of waste products for excretion from the body.

Answer 1

Hint: The vertebrate circulatory system is a closed circulatory system, where the blood is circulated within the vessels and is pumped through the vessels by the heart.

Complete answer: The functions of the vertebrate circulatory system is to bring oxygen to tissues and to carry the waste products, i.e. carbon dioxide. They also have many functions such as; it provides nutrients to different tissues and organs of the body. It also deals with the respiratory organs for the exchange of gases and also protects cells from the pathogens, It plays a major role in maintaining the pH of the body and also the regulates the body temperature, the blood, and lymph which is a part of the circulatory system that contains antibodies and immune cells which protect the body from infection. The heart and the blood vessels are two components that govern the circulatory system. The heart pumps the blood and the vessels deliver the blood to different parts. Removal of waste products for excretion from the body is performed by the kidney.
Hence, the correct answer is option D.

Note: The circulatory system is mainly of two types; open type circulatory system and the closed type circulatory system. Invertebrates, the circulatory system is of the closed type, where the blood is circulated in the vessel and its important function is to transport substances, regulate the body temperature, and the protection of the body by circulating antibodies in the blood and lymph.