Question

In dicot stem, the secondary growth takes place due to the activity of

• A. bark
• B. casparian strips
• C. development of cambium in stele and in the cortical region
• D. none of the above

Answer 1

The correct option is C development of cambium in stele and in the cortical region

Cambium is made up of meristematic cells that are responsible for the secondary growth in dicot plants. It is present between the vascular tissues in the stele and in the cortical region. The division of cambium gives rise to the secondary growth in dicot plants.

Bark is a non-technical term that refers to all tissues exterior to the vascular cambium, therefore including secondary phloem. Bark refers to a number of tissue types (periderm and secondary phloem).

Casparian strips are waterproof and it prevents the entry of water into pericycle in higher plants.