Question

Adjacent tracheids and vessels can transfer sap through thin areas in their walls called

• A. Plasmodesmata
• B. Gap junctions
• C. Tight junctions
• D. Pits

Answer 1

Answer: (D)

Pits

A. Plasmodesmata are intercellular channels that traverse the cell walls of plants and few algal cells which enables the transport and communication between the cells.

B. Gap junctions are the intercellular connection between animal cells which allows the movement of molecules, ions and electrical impulses to pass through regulated gateways between cells.

C. Tight junctions seal the adjoining epithelial cells beneath their apical surface and limit the movement of molecules and ions through the space between the cells.

D. Pits are thin regions of the cell wall through which the adjacent cells can communicate or exchange fluid through them (adjacent tracheids and vessels of xylem can transfer sap).

So, the correct answer is 'Pits'.