What is the function of stomata class 9th?
Functions of Stomata The major function of stomata is the exchange of gases by taking carbon dioxide from the atmosphere and giving out oxygen that is used by human beings and animals. They help in photosynthesis and transpiration.
What do stomata say?
Stomate, also called stoma, plural stomata or stomas, any of the microscopic openings or pores in the epidermis of leaves and young stems. Stomata are generally more numerous on the underside of leaves.
What is meant by Xylem?
Xylem, plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support. Xylem tissue consists of a variety of specialized, water-conducting cells known as tracheary elements.
What is the full meaning of xylem?
xylem. [ zī′ləm ] A tissue in vascular plants that carries water and dissolved minerals from the roots and provides support for softer tissues. Xylem consists of several different types of cells: fibers for support, parenchyma for storage, and tracheary elements for the transport of water.
Where is the xylem located?
Xylem can be found: in vascular bundles, present in non-woody plants and non-woody parts of woody plants. in secondary xylem, laid down by a meristem called the vascular cambium in woody plants. as part of a stelar arrangement not divided into bundles, as in many ferns.
What is an example of xylem?
Xylem is a type of tissue in plants that carries water. An example of xylem is what moves water and some nutrients through a plant. In a tree trunk, the innermost part of the wood is dead but structurally strong xylem, while the outer part consists of living xylem, and beyond it, layers of cambium and phloem.
What are the types of xylem?
Xylem can be defined as a complex tissue that is composed of four basic types of cell (tracheids, trachea, and xylem fibre and xylem parenchyma), remains in close association with phloem and has specialized functions like conduction of water and solutes, and mechanical strength.