Yes, it’s main function is to protect the organisms from germs, bacteria etc... and cover the essential organs from these organisms too.
Permanent tissue is composed of cells that have lost the ability to divide and has attained a definite shape or form.
There are three main types of permanent tissue. 1) simple, 2)complex, 3) special tissues.
"Denatures" is the word you are looking for!
They are called Westerlies and they blow from West to East