Plant Tissues

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A tissue is a group of cells that are similar in structure and perform similar functions together. Example: Xylem tissue consists of similar cells that all work together to transport water and mineral…

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The four basic types of plant tissues are: 1) Meristematic tissues (growth and repair), 2) Dermal tissues (outer coverings), 3) Ground tissues (bulk of plant body, packing), 4) Vascular tissues (trans…

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Meristematic tissues bring about overall growth and repair in plants. Key characteristics: Small cells with thin cell walls, living cells with prominent nucleus and abundant cytoplasm, compactly arran…

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Apical meristem: Present at growing tips (root and shoot), causes growth in length. Lateral meristem (Cambium): Present around edges laterally, causes growth in girth/thickness. Intercalary meristem: …

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Cutting the root tip removes the apical meristematic tissue, which is responsible for cell division and growth in length. Without these actively dividing cells at the tip, the root cannot elongate fur…

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Dermal tissue forms the outer covering of the entire plant surface. Main functions: Protects from water loss, mechanical damage, and invasion by parasites/disease-causing organisms. Also involved in g…

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Stomata are small pores in the epidermis of leaves, enclosed by two kidney-shaped guard cells. Functions include gaseous exchange (CO2 in, O2 out during photosynthesis), transpiration (water vapor los…

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Epidermis is a single layer of dermal tissue covering young plant parts. Bark forms in older trees and consists of several layers of dermal tissue above the epidermis, providing additional protection.