Column AColumn B(i) TracheidsA. Living component of xylem (ii) Vessels B. Tube-like cells with a tapering end(iii) Xylem FibreC. Look cylindrical structures having a tube- like appearance(iv) Xylem Parenchyma D. Dead cell with lignified walls
The correct option is B (i) B, (ii) C, (iii) D, (iv) A
Column AColumn B(i) TracheidsB. Tube-like cells with a tapering end(ii) Vessels C. Look cylindrical structures having a tube- like appearance(iii) Xylem FibreD. Deas cell with lignified walls (iv) Xylem Parenchyma A. Living component of xylem
Xylem is composed of four different kinds of elements:
Tracheids: Dead, tube-like cells with a tapering end. They are present mostly in the gymnosperm and lower angiosperm. They have a thick lignified wall and lack protoplasm. Their main function is water and mineral transportation.
Vessels: They are present in angiosperms. These are long cylindrical structures having a tube-like appearance. The walls are lignified and have a large central cavity. They are also dead and lack protoplasm. They have many cells called vessel members which are interconnected through a perforation in common walls. Mostly involved in the conduction of water, minerals and mechanical strength to the plant.
Xylem Fibre: Dead cell with lignified walls and a central lumen. Involved in water transportation and providing mechanical support.
Xylem Parenchyma: Only living cells of xylem and store starch and fat. They assist in the short distance transportation of water.
Column AColumn B(i) TracheidsB. Tube-like cells with a tapering end(ii) Vessels C. Look cylindrical structures having a tube- like appearance(iii) Xylem FibreD. Deas cell with lignified walls (iv) Xylem Parenchyma A. Living component of xylem
Xylem is composed of four different kinds of elements:
Tracheids: Dead, tube-like cells with a tapering end. They are present mostly in the gymnosperm and lower angiosperm. They have a thick lignified wall and lack protoplasm. Their main function is water and mineral transportation.
Vessels: They are present in angiosperms. These are long cylindrical structures having a tube-like appearance. The walls are lignified and have a large central cavity. They are also dead and lack protoplasm. They have many cells called vessel members which are interconnected through a perforation in common walls. Mostly involved in the conduction of water, minerals and mechanical strength to the plant.
Xylem Fibre: Dead cell with lignified walls and a central lumen. Involved in water transportation and providing mechanical support.
Xylem Parenchyma: Only living cells of xylem and store starch and fat. They assist in the short distance transportation of water.
