What is the structure and function of the xylem?

Xylem is the specialised tissue of vascular plants that transports water and nutrients from the plant–soil interface to stems and leaves, and provides mechanical support and storage. The water-conducting function of xylem is one of the major distinguishing features of vascular plants.

Regarding this, where is the xylem in a plant?

Xylem is located in roots, stems and leaves of the plant and it transports water and minerals from plant roots to aerial parts. With phloem it forms vascular bundles. Dead cells in Xylem contribute to wooden parts of the plant.

What is the xylem and phloem of a plant?

Plants have two different types of transport tissue. Xylem transports water and solutes from the roots to the leaves, phloem transports food from the leaves to the rest of the plant. Transpiration is the process by which water evaporates from the leaves, which results in more water being drawn up from the roots.

How does the xylem work?

Water from the roots is pulled up by this tension. At night, when stomata close and transpiration stops, the water is held in the stem and leaf by the cohesion of water molecules to each other as well as the adhesion of water to the cell walls of the xylem vessels and tracheids.

What organ have xylem tissue?

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. Together with phloem (tissue that conducts sugars…

Why is the xylem made up of dead cells?

Also, they need to be hollow to allow water to pass up them; organelles get in the way especially vacuoles. So they have to be empty thus dead for that. Thirdly, the ends break down forming a continuous vessel, so if the xylem elements were alive they’d be in a bit of trouble.

Which is transported by phloem?

In vascular plants, phloem is the living tissue that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, to parts of the plant where needed. This transport process is called translocation.

What organ is the xylem tissue part of?

It is made of two specialized conducting tissues: xylem and phloem. Xylem tissue transports water and nutrients from the roots to different parts of the plant. It includes three different cell types: vessel elements and tracheids (both of which conduct water) and xylem parenchyma.

What is found in phloem?

Phloem, also called bast, tissues in plants that conduct foods made in the leaves to all other parts of the plant. Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells.

What does the company Xylem do?

Xylem Inc. is a large American water technology provider, enabling customers worldwide to transport, treat, test and efficiently use water in public utility, residential, commercial, agricultural and industrial settings. The company does business in more than 150 countries.

What is the structure of phloem?

Phloem Structure. Phloem is composed of several cell types including sclerenchyma, parenchyma, sieve elements and companion cells. The sieve element and companion cell are found closely associated with each other in what is referred to as the sieve element/companion cell complex.

What is the transpiration in a plant?

Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Leaf surfaces are dotted with pores called stomata, and in most plants they are more numerous on the undersides of the foliage.

Where is the phloem?

Phloem cells conduct food from leaves to rest of the plant. They are alive at maturity and tend to stain green (with the stain fast green). Phloem cells are usually located outside the xylem. The two most common cells in the phloem are the companion cells and sieve cells.

What is translocation in a plant?

Translocation is the movement of materials from leaves to other tissues throughout the plant. Plants produce carbohydrates (sugars) in their leaves by photosynthesis, but nonphotosynthetic parts of the plant also require carbohydrates and other organic and nonorganic materials.

Which tissue transports sugar around the plant?

Plants have two different types of ‘transport’ tissue. Xylem transports water and solutes from the roots to the leaves, phloem transports food from the leaves to the rest of the plant. Transpiration is the process by which water evaporates from the leaves, which results in more water being drawn up from the roots.

How does carbon dioxide get into a plant?

Plants get carbon dioxide from the air through their leaves. The carbon dioxide diffuses through small holes in the underside of the leaf called stomata. (One of these holes is called a stoma. This also allow the oxygen produced in photosynthesis to leave the leaf easily.

What is the function of the xylem and phloem?

Plants have two different types of transport tissue. Xylem transports water and solutes from the roots to the leaves, phloem transports food from the leaves to the rest of the plant. Transpiration is the process by which water evaporates from the leaves, which results in more water being drawn up from the roots.

Where does the phloem get the food?

Phloem is vascular tissue that moves food throughout the plant. It does this through a series of tubes that connect sugar sources (such as leaves) to sugar sinks (such as growing fruits, stems and roots). Phloem can be made of sieve cells, sieve tubes and sieve plates.

Where is the xylem located in a plant?

Xylem is located in roots, stems and leaves of the plant and it transports water and minerals from plant roots to aerial parts. With phloem it forms vascular bundles. Dead cells in Xylem contribute to wooden parts of the plant.

Why is translocation important in the life of plants?

Translocation. Translocation is the movement of materials from leaves to other tissues throughout the plant. Plants produce carbohydrates (sugars) in their leaves by photosynthesis, but nonphotosynthetic parts of the plant also require carbohydrates and other organic and nonorganic materials.

What is the function of the stomata in plants?

The gas exchange that occurs when stomata are open facilitates photosynthesis. Photosynthesis is the process by which plants convert sunlight into usable energy. During photosynthesis, carbon dioxide is taken in from the atmosphere through the stomata and oxygen is released as a waste product.

What are three kinds of tissues do meristems develop into?

Apical meristems may differentiate into three kinds of primary meristem:

  • Protoderm: lies around the outside of the stem and develops into the epidermis.
  • Procambium: lies just inside of the protoderm and develops into primary xylem and primary phloem.
  • Ground meristem: develops into the cortex and the pith.
  • How does the xylem work?

    Water from the roots is pulled up by this tension. At night, when stomata close and transpiration stops, the water is held in the stem and leaf by the cohesion of water molecules to each other as well as the adhesion of water to the cell walls of the xylem vessels and tracheids.

    What is the definition of xylem in plants?

    a compound tissue in vascular plants that helps provide support and that conducts water and nutrients upward from the roots, consisting of tracheids, vessels, parenchyma cells, and woody fibers.

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