NEET BIOLOGY

Detailed explanation-1: -Apoplast is the space outside the plasma membrane that allows free movement of material. This route plays a crucial role, and allows diffusion of a solvent across the tissue or organ. The response to different environmental and biotic stimuli in apoplast can be an oxidative or respiratory burst (Fig. 1).

Detailed explanation-2: -2. Cell wall (Protective wall): Plants cells, in addition to the plasma membrane have another rigid outer covering called cell wall. The cell wall lies outside the plasma membrane.

Detailed explanation-3: -The plasma membrane, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. In bacterial and plant cells, a cell wall is attached to the plasma membrane on its outside surface.

Detailed explanation-4: -Nowadays, the apoplast is defined as the intercellular space filled with gas and water, contained between cell membranes, the interfibrillar and intermicellar space of the cell walls, and the xylem extending to the rhizoplane and cuticle of the outer plant surface (Figure 1).

Detailed explanation-5: -The apoplast is the space outside the plasma membrane within which material can disperse freely. It is broken up by the Casparian strip in roots, by air spaces between plant cells and by the plant cuticle. The apoplast route facilitates the transportation of water and solutes across a tissue or organ.