Question

This organ system displays a high degree of conservation with respect to its organs, products and to some degree their function in the vertebrates.

1. digestive system
2. endocrine system

Answer 1

Ans:

B) Endocrine system

Reason: For the body to function properly, its various parts and organs must communicate with each other. The endocrine system is a chemical messenger system which releases hormones from internal glands of organism directly into the circulatory system which then carried via the blood to their target cells regulating the function of different organs in body. In vertebrates, the hypothalamus is the neural control center for all endocrine systems.