Question

The term "bark" means

• A. Phellem, phelloderm and vascular cambium
• B. Phellem, phellogen, phelloderm and secondary phloem
• C. Periderm and secondary xylem
• D. Cork cambium and cork

Answer 1

The correct option is B Phellem, phellogen, phelloderm and secondary phloem

All tissues present outer to the vascular cambium together called Bark. It is found in dicot stems only. it includes, a dead tissue cork or phellem, meristamatic tissue cork cambium or phellogen, parenchyma in secondary cortex or phelloderm, complex tissue secondary phloem. it is found in two forms, early bark- bark formed in the spring season and late or hard bark - bark formed in the end of the growing season.

So, the correct option is 'Phellem, phellogen, phelloderm, and secondary phloem'.