NEET BIOLOGY

Detailed explanation-1: -The apoplast pathway comprises of non living components of a plant body i.e., intercellular spaces and cell wall. The movement through apoplast is unregulated and fast. Symplast comprises of living components i.e., protoplasm, cell membrane and plasmodesmata.

Detailed explanation-2: -The apoplast comprises the intercellular space, the cell walls, and the xylem.

Detailed explanation-3: -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.

Detailed explanation-4: -Solution: Cytoplasmic streaming does not aid in apoplastic movement.

Detailed explanation-5: -Apoplast was previously defined as “everything but the symplast, consisting of cell walls and spaces between cells in which water and solutes can move freely". However, since solutes can neither freely move through the air spaces between plant cells nor through the cuticle, this definition has been changed.