Secondly, the metaxylem is larger in size with thickenings in scalariform (ladder-like) or pitted (sheet-like). After the period of elongation, when cells do not increase in size, the metaxylem completes its development. Thus, the xylem formed comprises dead cells that act as hollow ...
These are the only cells that are alive in the xylem. They are composed of thin cell walls and contain huge vacuoles, nucleus and protoplast. Xylem sclerenchyma: They are dead cells that are fibrous in nature. They lack protoplast. They lie between the tracheids and xylem vessels. These ...
Mature phloem is a live tissue,whereas xylem is dead when mature. Explain why it is necessary for phloem to be alive to be functional,whereas xylem can function as dead tissue. What is the main function of xylem tissue in plants? How do the xylem and phloem function? What are they, and...
Root hairs ___. (a) have no known function in plants (b) are alive but very delicate and thin-walled (c) covered with cutin wax to inhibit water loss (d) absorb carbohydrates to nourish the plant. What is "the transpiration stream in the plant bod...
Mature phloem is a live tissue,whereas xylem is dead when mature. Explain why it is necessary for phloem to be alive to be functional,whereas xylem can function as dead tissue. What is the main function of the phloem tissue in plants?