question_answer 41)

  The cross-section of a plant material showed the following features when viewed under the microscope. (a) The vascular bundles were radially arranged. (b) Four xylem strands with exarch condition of protoxylem. To which organ should it be assigned?

Answer:

                  Debark means the removal of bark, i.e., all tissue exterior to the vascular cambium,including secondary phloem. Bark refers to a number of tissue types, viz., periderm(phellogen, pheltem and phelloderm) and secondary phloem.