Question

Inter-fascicular cambium develops from the cells of

• A. Xylem parenchyma
• B. Endodermis
• C. Medullary rays
• D. None of the above

Answer 1

The correct option is C Medullary rays

• Inter-fascicular cambium develops from the cells of medullary rays.
• The cambium present between primary xylem and primary phloem is called intra-fasicular cambium.
• At the time of secondary growth, cells of medullary rays in line with intra-fasicular cambium become meristematic and form inter-fasicular cambium.
• The intra-fascicular and inter-fascicular cambiums, therefore, represent a continuous ring which bisects the primary xylem and primary phloem and is known as cambium ring.

Thus, the correct answer is option D.