Intrafascicular cambium is situated in (1) Outside the vascular bundles (2) In medullary rays (3) Inside the vascular bundles (4) In between the vascular bundles

Answer: (3)

In a dicotyledonous stem, the primary xylem and primary phloem are separated by cambium cells called intrafascicular cambium. During secondary growth, the medullary rays adjacent to the intrafascicular cambium develop into meristematic tissue and are called interfascicular cambium. Both intrafascicular and interfascicular cambiums form a continuous ring called a cambial ring. Thus, the intrafascicular cambium resides within the vascular bundles.

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