Cell: A cell is the basic structural and functional unit of a living organism. Example: Nerve cell.
Tissue: A tissue is a group of cells having a common origin, similar structure and function and held together by a cementing substance. Example: Connective tissue.
Organ: Different types of tissues working together and contributing to some specific function inside the body constitute an organ. Example: Stomach.
Organ system: Different organs coordinate to perform a specific life process and form an organ system. Example: Digestive system.
Organism: Various organ systems working simultaneously together constitute an organism. Example: Plants. In this article we are going to learn only about Xylem.
Classification of plant tissues
- MERISTEMATIC TISSUE
- PERMANENT TISSUE
Types of Permanent Tissue
- Protective tissue
- Supporting tissue
- Conducting tissue
Conducting tissues are also called vascular tissue. Conducting tissues are Present in the stem, roots and leaves. Conducting tissue Provide a passage for water and dissolved materials to move up and down in the plant body.
Types of Conducting tissue
|CHARACTERISTICS||1. Complex permanent tissue|
2. Most of the cells
|LOCATION||Present in the stem, roots and leaves.|
movement of water and dissolved
materials absorbed by the root from the soil
to other parts of
Components of it :
- Xylem vessels
- Xylem parenchyma
- Xylem fibres
|CHARACTERISTICS||Made up of elongated cells with|
flat, tapering ends.
|FUNCTION||Provide a network|
of hollow and
connected cells for the transport of water.
|CHARACTERISTICS||1. Consist of dead|
2. They are tubular
structures and are
much wider than
|FUNCTION||Allow free flow of|
water and minerals in the vertical direction
from the roots to
|CHARACTERISTICS||Consists of living|
|FUNCTION||Stores food in the|
|CHARACTERISTICS||Separated by thin|
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