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Ch 35 plant s,g,&d

plant structure growth and development

QuestionAnswer
what is cellular differentiation? the specialization of cells in structure and function
what is the most abundant plant cell type? parenchyma
what is the structure of a parenchyma cell? thin and flexible primary walls, no secondary walls, large vacuoles, chloroplasts
what is the function of a parenchyma cell? photosynthesis (primary site), storage of food and water, perform metabolic functions
what cell type performs the most metabolic functions? parenchyma
what is the structure of a collenchyma cell? grouped in strands, thicker and uneven cell walls, no secondary walls
what is the function of a collenchyma cell? support young parts of plant shoot, provide flexible support without restraining growth
what is the structure of a sclerenchyma cell? rigid, thick secondary wall strengthened with lignin
what is the function of a sclerenchyma cell? support the plant
what are the two types of sclerenchyma cells? sclereids and fibers
what is the structure of a sclereid? short and irregular in shape, thick secondary walls with lignin
what is the structure of a sclerenchyma fiber? long and slender, arranged in threads
what type of cell is responsible for the gritty texture in pears? sclerenchyma sclereids
what type of cell is important economically, such as in jute, hemp, and flax? sclerenchyma fibers
what type of cell is dead at functional maturity, but still persists? sclerenchyma
what is an important characteristic of lignin? very resistant to decomposition
Created by: 619256711
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