Correct option is C
Explanation-
There are three major transport pathways for water and solutes in plants:
1. Apoplastic Pathway - Movement of substances through the cell walls and intercellular spaces. This does not cross plasma membranes. This is entirely extracellular (outside the plasma membrane) without involvement of plasmodesmata.
2. Symplastic Pathway - Movement of substances from cell to cell through cytoplasm via plasmodesmata. They have cytoplasm-connected route. It’s intracellular because the transport is via cytoplasmic connections.
3. Transcellular Pathway - Transport across cells, crossing plasma membranes and tonoplasts (vacuolar membranes). Water or solutes move into a cell, through the cytoplasm, vacuole, and out the other side.
Statement A - Apoplastic transport mostly occurs through cell wall - True
This is the correct definition of apoplastic transport.
Statement B - Apoplastic transport mostly involves plasmodesmata - False
Plasmodesmata are involved in symplastic, not apoplastic transport. Apoplastic bypasses the cell membrane, staying in the cell wall region.
Statement C - Symplastic transport predominantly occurs through plasmodesmata - True
This is the defining characteristic of symplastic movement — the movement of water and solutes through the cytoplasmic continuum via plasmodesmata.
Statement D - Transcellular transport mostly occurs through tonoplast via vacuoles - True
Transcellular transport involves movement across cell membranes and the tonoplast. The solute moves through the vacuole (storage organelle) and cytoplasm, crossing membranes multiple times.
Correct statement - A , C and D
Correct option is c - A , C and D
