The process by which plants become woody is:

In dicot roots,the vascular cambium originates from:

Which of the following meristems is responsible for the formation of the extra-stelar secondary growth in a dicot stem?

Identify the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.
$I.$ Secondary cortex
$II.$ Autumn wood
$III.$ Secondary phloem
$IV.$ Phellem

Which of the following is incorrect regarding heartwood?

Grafting cannot be done to monocots because they lack