BY 124 Lab study quiz 2.docx - Types of Plant Cells Primary Wall Secondary Wall Function Dead or alive Parenchyma cells(least specialized Collenchyma

BY 124 Lab study quiz 2.docx - Types of Plant Cells Primary...

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Types of Plant Cells Parenchyma cells (least specialized) Collenchyma Cells Sclerenchyma Cells Primary Wall Thin More rigid Thin Secondary Wall No secondary wall No secondary wall Secondary walls contain lignin (rigid and woody) Function -Holds water & stores nutrients in large central vacuole - does most of metabolism to support the plant (usually make up ground tissue) -Support young plants & stems of nonwody ( herbaceous) plants -Capable of elongation -Found in areas that have stopped growing Dead or alive Alive at maturity Alive at maturity Dead, but important in support Tissue Types Dermal Epidermis (aka dermal tissue): -gen. function is protection, but can have a more specific function -single layer of tightly packed cells, “skin” of plant, covers leaves, roots &stems -leaves and sometimes stems have a waxy covering to prevent water loss called a cuticle Periderm: - replaces epidermis in secondary growth - cork & cork cambium -dead tissue -comes from ground meristem Vascular -transport of water, minerals and
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  • Spring '11
  • Cusic
  • phloem, Xylem, Plant anatomy, secondary cell

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