Skin, or the integumentary system, acts as a protective covering that prevents the entry of harmful substances and organs, and prevents extreme water loss.
Protective covering is a covering that is intend to protect from damage or injury.
The cell membrane is the barrier that controls what substances enter and leave a cell.
Cell membreneA layer that controls what enters and what leaves the cell. Or a protective covering enclosing the entire cell.(controls substances going in and out of the cell.)
protective covering (a lead apron)
Spicules are small, spike-like structures found in various organisms. They are composed of hard, sturdy compounds that often act as a protective covering on organisms, such as the spicules on some frogs' skin.
The waxy protective covering of a land plant is called a cuticle.
cornea
Armor.
The protective covering on the package was damaged. She is as protective as a mother hen.
The skin (or hide) and fur are the protective covering of a raccoon.
tegument!
Yes!