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Reading Comprehension Worksheet


Simple tissues are also referred to as ground tissues. They include the tissues known as parenchyma, collenchyma, and sclerenchyma. Parenchyma tissue is composed of parenchyma cells, which are found throughout the plant. They are particularly abundant in the stems and roots. The leaf cells that carry out photosynthesis are also parenchyma cells. Unlike many other plant cells, parenchyma cells are alive at maturity and retain the ability to divide. They perform many functions. Some are specialized for photosynthesis, others for storage, and still others for secretion and transport. An important class of parenchyma cells makes growth tissues called meristem and cambium. These tissues give rise to all other tissues in the plant body.

Like parenchyma cells, collenchyma cells are alive at maturity. They differ from parenchyma cells in that they have thick cell walls. Collenchyma tissue is most often found in the form of strands or cylinders of cells in stems and leaves. The thick cell walls of collenchyma cells provide support to these plant structures. The strands of tissue in celery are collenchyma tissues.

1. Name three types of ground tissues? _________________________________
2. Where is photosynthesis carried out in the plant?


3. Which cells in the plant have the ability to undergo mitosis, after they mature? _________________________________
4. What type of tissue accounts for the crunch when you eat celery?


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