what are the characteristics of xylem & how they help xylem to carry out its function?
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Xylem, plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support. Xylem tissue consists of a variety of specialized, water-conducting cells known as tracheary elements. Together with phloem (tissue that conducts sugars from the leaves to the rest of the plant), xylem is found in all vascular plants, including the seedless club mosses, ferns, horsetails, as well as all angiosperms (flowering plants) and gymnosperms (plants with seeds unenclosed in an ovary).
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Explanation:
Given: d=3
We know:
an=a+(n−1)d
∴a20−a15=[a+19d]−[a+14d]
=5d
=5×3
=15
Hence, the answer is 15.
Given: d=3
We know:
an=a+(n−1)d
∴a20−a15=[a+19d]−[a+14d]
=5d
=5×3
=15
Hence, the answer is 15.
Given: d=3
We know:
an=a+(n−1)d
∴a20−a15=[a+19d]−[a+14d]
=5d
=5×3
=15
Hence, the answer is 15.
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