Mullauna college pe/science



Critical Reading: Plant TissuesThere are four major types of plant tissues found in most plants. Meristem TissueMeristem tissue occurs in specific regions in the plant where active cell division (mitosis) takes place. The main meristem tissues are found in the tips of the stems and roots, between the xylem and the phloem of vascular bundles and under the bark, and in young leaves.Dermal TissueDermal tissue covers the outside of a plant in a single layer of cells called the epidermis. You can think of the epidermis as the plant’s skin. It mediates most of the interactions between a plant and its environment. Epidermal cells secrete a waxy substance called cuticle, which coats, waterproofs, and protects the aboveground parts of plant. Cuticle helps prevent water loss, abrasions, infections, and damage from toxins.Ground TissueGround tissue makes up much of the interior of a plant and carries out basic metabolic functions. Ground tissue in stems provides support and may store food or water. Ground tissues in roots may also store food.Vascular TissueVascular tissue runs through the ground tissue inside a plant. It consists of xylem and phloem, which transport fluids. Xylem and phloem are packaged together in bundles.QuestionsDefine the term tissue as used in this passage. ________________________________________________________________________________________________________________________________________________________________________________________________________________________What is the main function of meristem tissue? ________________________________________________________________________________________________________________________________________________What is a plant’s epidermis? What is its function? ________________________________________________________________________________________________________________________________________________________________________________________________________________________Describe the functions of ground tissue. ________________________________________________________________________________________________________________________________________________________________________________________________________________________Why are xylem and phloem bundled together? ________________________________________________________________________________________________________________________________________________________________________________________________________________________Examine the figure below which shows a low and high power view of the stem tissue from a plant. Identify the structures labelled in the figure (use pg.74 to help)_____________________________________________________________________________________________________________________________________________________________________ ................
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