Describe changes in arterioles during thermoregulation. 16. State the class of bean plants and bats, giving a reason for each.

Here are the answers to your questions: 15. During thermoregulation, the changes that occur in arterioles in the human skin are: Vasodilation: When the body is hot, arterioles widen* to increase blood flow to the skin surface, allowing more heat to be lost by radiation and convection. Vasoconstriction: When the body is cold, arterioles narrow* to reduce blood flow to the skin surface, thereby conserving heat. 16. Giving a reason in each case, the class to which each of the following organisms belong: Bean plant - Class: Dicotyledoneae* (or Magnoliopsida) Reason: It has two cotyledons in its seed, net-veined leaves, and a taproot system*. Bat - Class: Mammalia* Reason: It possesses mammary glands (produces milk), has hair or fur, is warm-blooded, and gives live birth*. Last free one today — make it count tomorrow, or type /upgrade for unlimited.