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Tissue(s) present in an annual ring is/are

A. secondary xylem and phloem.

B. primary xylem and phloem.

C. secondary xylem only.

D. primary phloem and secondary xylem.

Correct Answer : C.


The periodical activity of the cambium, thus results in distinct growth layers or rings of secondary xylem. These are called growth rings. The growth rings of spring wood and autumn wood produced in a year constitute an annual ring.

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