1. Supplying oxygen to cell and tissue
2. Providing nutrients to cells
3. Protecting your body from infections
The outer layer of a cell that acts as a gatekeeper to a cell is the plasma membrane.
The plasma membrane's job is to selectively permit or restrict substances from entering or leaving the cell.
C) Tectonic is not a type of plate boundary
Explanation:
The cellulose make stems, leaves and branches. So it play an important role in building of tissues. So it give the shape to plant. The molecules of cellulose have hydroxyl group that form hydrogen bonding with other cellulose and prrovide support to plant.
