Which one of the following is NOT a component of conducting tissue in ...
Pericycle: A thin layer of plant tissue between the endodermis and the phloem. It is not a component of conductive tissue.
View all questions of this test
Which one of the following is NOT a component of conducting tissue in ...
Introduction:
Conducting tissue in plants plays a crucial role in the transportation of water, minerals, and organic nutrients throughout the plant. It consists of several components that work together to facilitate this process.
Components of Conducting Tissue:
1. Fibers:
Fibers are elongated, thick-walled cells that provide mechanical support to the plant. They are dead cells with heavily lignified walls, which makes them strong and resistant to bending or breaking. Fibers are not involved in the transportation of fluids but contribute to the overall strength and rigidity of the plant.
2. Tracheids:
Tracheids are long, tapered cells that are involved in the transport of water and minerals. They are found in the xylem, which is responsible for the upward movement of water from the roots to other parts of the plant. Tracheids have lignified walls with pits that allow water to flow between adjacent cells.
3. Pericycle:
The pericycle is not a component of conducting tissue. It is a tissue layer found in the roots of vascular plants. The pericycle is located just inside the endodermis and is responsible for the formation of lateral roots. It also plays a role in the transport of water and nutrients from the soil to the vascular tissues.
4. Sieve Tubes:
Sieve tubes are specialized cells found in the phloem, which is responsible for the downward movement of organic nutrients (such as sugars) from the leaves to other parts of the plant. Sieve tubes are interconnected to form a sieve tube element, and they have perforated end walls called sieve plates. These sieve plates facilitate the flow of nutrients between adjacent cells.
Conclusion:
In conclusion, the pericycle is not a component of conducting tissue in plants. While it plays a role in the transport of water and nutrients in the roots, it is not directly involved in the long-distance transportation of fluids throughout the plant. The other components of conducting tissue, including fibers, tracheids, and sieve tubes, are essential for the efficient movement of water, minerals, and organic nutrients in plants.