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How are companion cells helpful to sieve...

How are companion cells helpful to sieve tubes?

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**Step-by-Step Solution:** 1. **Understanding Phloem Structure**: - Phloem is a type of vascular tissue in plants responsible for the transport of nutrients, particularly sugars produced during photosynthesis. It consists of sieve tube elements and companion cells. 2. **Role of Sieve Tube Elements**: - Sieve tube elements are the main conduits for transporting sugars and other organic compounds from the source (where they are produced, typically leaves) to the sink (where they are utilized or stored). ...
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Companion cells are

Assetion: The death of a companion cell leads to the death of sieve cell also. Reason: Both companion and sieve cells are phloem cells.

Find the odd one out, giving reasons : Vessels, companion cells, sieve tubes, collenchyma.

Assertion : Death of companion cell results in the death of its adjacent sieve tube member. Reason : Companion cells and sieve tube cells are derived from the same mother cell.

Sieve tubes and companion cells are sister cells and (a) Companion cells maintain the osmotic balance in sieve elements (b)Both cells are derived from same mother cells (c )Sieves are associated with companion cells in all seed beasing plants (d) Companion cells present in Pinus only

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

The sieve tubes and companion cells are exceptional features of