Phloem sieve tubes | | Phloem companion cells

Assertion :- Companion cells are essential for functioning of sieve tubes. Reason :- The companion cells help in maintaining the pressure gradient in sieve tubes.

Name the conducting tissue of plants which is made of sieve tubes alongwith companion cells

Plant group in which phloem is composed of sieve tube elements, companion cells, phloem parenchyma & Phloem fibres

Xylem ||Phloem

Assertion :- Sieve tube element and companion cell are called sister cells. Reason :- Sieve tube element and companion cells arise from same mother cells.

The sieve tubes and companion cells are exceptional features of

Sieve tubes and cokpanin cells occur in