First slide

Secondary Growth

Question

The annual rings in dicot stems are formed due to difference in

Easy

A

quantities of xylem and phloem.
B

seasonal variations in the vascular cambium activity.
C

seasonal variations in the activity of cork cambium.
D

quantities of sapwood and heart wood.

Solution

The annual rings are formed by variations in the activity of vascular cambium. The vascular cambium is the lateral meristem which gives rise to the secondary phloem and secondary xylem.

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