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Question

For a critical study of secondary growth in the plant, which of the following pairs is suitable?

A
Sugarcane and sunflower
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B
Teak and pine
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C
Deodar and fern
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D
Wheat and maiden hair fern
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Solution

The correct option is B Teak and pine
Teak and pine are temperate woody trees which show the presence of annular growth rings because their activity of vascular cambium is seasonal. The cambium has more growth in spring and less growth in autumn. By counting the number of annular rings, it is possible to know the age of a plant.

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