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Vascular tissue

The document provides an overview of vascular tissue differentiation, focusing on the definition and types of vascular tissue, namely xylem and phloem. Xylem functions primarily in water transport from roots to leaves, while phloem is responsible for the transport of food and consists mainly of living cells. Additionally, it discusses the development of vascular tissue as a complex process involving hormonal signaling and intercellular communication.

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GOVT. EVPG COLLEGE KORBA Department of botany Paper- I Vascular Tissue differentiation Guided By: Md. Arshad Kazi Sir Prepared by: Vinay Kant Kanwar
Vascular Tissue differentiation Root Development
The objectives are:  Definition of vascular tissue  Type of vascular tissue  Learning about Vascular tissue development
Definition of vascular tissue It is a complex conducting tissue, formed of more than one cell type, found in vascular plants. The primary components of vascular tissue are the xylem and phloem.
Meaning of fruit There are two types of vascular tissue: xylem and phloem.
Types of vascular tissue-xylem  Xylem Tracheids Vessel members Parenchyma ● Primary Xylem Protoxylem Metaxylem ● Secondary Xylem
Types of vascular tissue The xylem is principally a water transport tissue. It moves water and material dissolved in water from the roots to the leaves. The xylem is composed of two tracheary elements. Tracheary elements must die first before they assume their ultimate function of transporting water and dissolvedmaterials. The xylem is composed of two tracheary elements: vessel elements and tracheids.
Types of vascular tissue-phloem  Phloem Sieve Cells Sieve tube members Companion cells Phloem parenchyma ● Primary Phloem Protophloem Metapholoem ● Secondary Phloem
Phloem tissue The phloem consists primarily of living cells. A characteristic cell of the phloem is the sieve tube member. Sieve tube members often transport food. Sieve plates appear when enzymes break up the ends of the tubes and connect the contents of neighbouring cells. The phloem often has companion cells with it. These cells aid in transport.
Vascular tissue development
Development of vascular tissue is a remarkable example of intercellular communication and coordinated development involving hormonal signalling and tissue polarity. Thus far, studies on vascular patterning and regeneration have been conducted mainly in trees woody plants with a well-developed layer of vascular cambium and secondary tissues.
Development of vascular tissue
Vascular Bundles with xylem & phloem
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