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SECOND TERM: E-LEARNING NOTES
SUBJECT: BIOLOGY
CLASS: SS 1
WEEK 1
Revision of work done in first term
WEEK 2
TOPIC: TISSUE AND SUPPORTING SYSTEMS
CONTENT (a) Different types of supporting tissues (b) Functions of supporting tissues in plants.
TYPES OF SUPPORTING TISSUES
Plants have various types of supporting tissues that make them up. Like animals, these tissues help them to stand some meters above the ground without falling. They have definite shape, strength, rigidity and to resists external force like wind and water.
Tissues that give support to plant are
Plant Tissues
Stems differ between gymnosperms (conifers and related plants) and angiosperms (flowering plants) and between the two divisions of angiosperms—monocotyledons and dicotyledons. Common to all of them, though, are basic tissue types: vascular tissue (xylem and phloem), which conducts water and nutrients to the cells of the plant; ground tissue, called pith at the center of the stem, which surrounds the vascular tissue; and dermal tissue, a protective layer.
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