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Which of the following figure is a type of permanent tissue having many different types of cell?





Correct Answer :


Figure a, b, c and d are respectively collenchyma, sclerenchyma, xylem tissues and parenchyma tissues. Collenchyma, sclerenchyma and parenchyma tissues are types of simple permanent tissues. Figure c (xylem tissue) is a type of permanent tissue having many different types of cell. Xylem is one of the two types of transport tissue in vascular plants, phloem being the other. The most distinctive xylem cells are the long tracheary elements that transport water. Tracheids and vessel elements are distinguished by their shape; vessel elements are shorter, and are connected together into long tubes that are called vessels.

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