Question

Sieve tube elements and companion cells are connected by

• A. Plasmodesmata
• B. Pit fields
• C. aquaporins
• D. gap junctions

Answer 1

The correct option is A Plasmodesmata

Sieve tube elements and companion cells are connected through plasmodesmata. Plasmodesmata consist of channels between cell walls of adjacent plant cells that help in transport and in the cell to cell recognition. Pit fields are portions in cell walls, through which the adjacent plant cells can exchange fluids and communicate. Aquaporins are membrane proteins that help in the transfer of water and other solutes across the membrane. Gap junctions are found between animal cells.

So, the correct option is 'Plasmodesmata'.