Draw illustrations to highlight the anatomical differences between:
$(a)$ Monocot root and dicot root
$(b)$ Monocot stem and dicot stem

(N/A) The anatomical differences are as follows:
$(a)$ Monocot root vs. Dicot root:
- In dicot roots,the vascular bundles are usually $2$ to $4$ (diarch to tetrarch),whereas in monocot roots,they are polyarch (more than $6$).
- Dicot roots show secondary growth,while monocot roots do not.
- Pith is small or absent in dicot roots,but large and well-developed in monocot roots.
$(b)$ Monocot stem vs. Dicot stem:
- In dicot stems,vascular bundles are arranged in a ring,whereas in monocot stems,they are scattered throughout the ground tissue.
- Dicot stems have a distinct cortex,endodermis,pericycle,and pith,whereas these are not clearly differentiated in monocot stems.
- Vascular bundles in dicot stems are open (possess cambium),while in monocot stems,they are closed (lack cambium).