ANATOMY

Detailed explanation-1: -The cell membrane is called selectively permeable as it only allows specific molecules to pass. Only specific molecules like water and gaseous molecules can pass through the cell membrane directly. It stops the flow of other molecules towards the two sides.

Detailed explanation-2: -Selective permeability of the cell membrane refers to its ability to differentiate between different types of molecules, only allowing some molecules through while blocking others. Some of this selective property stems from the intrinsic diffusion rates for different molecules across a membrane.

Detailed explanation-3: -When it enables the passage of water within the cell or cell organelles, the membrane is called selectively permeable. Water from the higher concentration moves to the lower concentration in this process.

Detailed explanation-4: -The correct answer is: Cell membrane.

Detailed explanation-5: -A membrane which allows certain substances to pass, but does not allow others to pass through it is called a selectively permeable membrane.