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Question
The trees growing in desert will
The trees growing in desert will
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Solution
The correct option is D Not show distinct annual rings
In temperate woody plants, the activity of vascular cambium is seasonal and not uniform throughout the year. This is seen only in the region of secondary xylem. The cambium is less active in autumn and more active in spring. Thus, in each year two zones of secondary xylem are formed and both can be easily demarcated. These two zones constitute an annual or growth ring. Because climatic variations (autumn and spring seasons) are absent in desert plants, the annual rings are absent.Thus, the correct answer is option D.
In temperate woody plants, the activity of vascular cambium is seasonal and not uniform throughout the year. This is seen only in the region of secondary xylem. The cambium is less active in autumn and more active in spring. Thus, in each year two zones of secondary xylem are formed and both can be easily demarcated. These two zones constitute an annual or growth ring. Because climatic variations (autumn and spring seasons) are absent in desert plants, the annual rings are absent.
Thus, the correct answer is option D.
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