Plant Tissues.

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Presentation transcript:

Plant Tissues

Plant Tissues There are 3 types of plant tissue: Dermal Tissue Vascular Tissue Ground Tissue

Dermal Tissue Includes: Epidermal Tissue Periderm Tissue

Epidermal Tissue A thin layer of cells that covers the surface of leaves, stems and roots Root hairs are an extension of the epidermal tissue that increase the roots surface area for water and nutrient absorption Can create a waxy cuticle to protect leaves from water loss

Periderm Tissue In woody plants, epidermal tissue is replaced by periderm tissue produces bark on stems and roots

Vascular Tissue Colour Changing Carnations http://www.youtube.com/watch?v=AMvEVnAFCNA http://www.youtube.com/watch?v=po32400Al5w

Vascular Tissue The vascular tissue of a plant is like our circulatory system. It transports the water, nutrients and other chemicals throughout the plant.

Vascular Tissue There are 2 types of vascular tissue: Xylem Phloem

Xylem Elongated cells that, once matured, are hollow tubes with no organelles stacked end to end to create a tube from the roots to the shoots Transport water from the roots to the leaves of the plant Once xylem cells are mature they are no longer living tissue

Phloem Transports sugars created by photosynthesis, other chemicals and hormones throughout the plant Phloem cells are living tissue

Vascular tissue is arranged in 2 different ways: Monocot – vascular bundles (one xylem and one phloem tube) are arranged randomly throughout the stem Dicot – vascular bundles are arranged in a ring formation

Ground tissue is the composed of all the tissue in between the dermal tissue and the vascular tissue. It performs different functions in the different parts of the plant In roots – storage of carbohydrates In Stems – provides storage and support In Leaves – performs photosynthesis Ground Tissue