HORTICULTURE SCIENCE
PLANT BIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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changes primary xylem and phloem to secondary xylem and phloem
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makes the roots longer
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results from an increase in the primary xylem and phloem
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produces bark and wood
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Detailed explanation-1: -Secondary growth in the dicot stem involves the formation and functioning of the vascular cambium and cork cambium. Secondary growth provides the plants or trees with protection against mechanical stress and microbial activity. Secondary growth increases the girth of the stem.
Detailed explanation-2: -Cell division by the cambium produces cells that become secondary xylem and phloem. As secondary phloem and xylem tissue accumulates, it both increases the girth of the stem and forms wood and bark.
Detailed explanation-3: -In addition to the primary tissues, tree species produce a secondary tissue (i.e. wood) from the vascular cambium in a process called secondary growth (Mauseth, 1998). Secondary growth is an important biological process.
Detailed explanation-4: -1: Primary and secondary growth: In woody plants, primary growth is followed by secondary growth, which allows the plant stem to increase in thickness or girth. Secondary vascular tissue is added as the plant grows, as well as a cork layer. The bark of a tree extends from the vascular cambium to the epidermis.