In botany,from the perspective of evolution and phylogeny,which plant structure can be used to represent changes?

Members of $Winteraceae$,$Tetracentraceae$ and $Trochodendraceae$:

The branch of botany that deals with the study of the internal organization of plants is:

Explain plant anatomy and its importance.

How is the study of plant anatomy useful to us?

The process of extraction of separated $DNA$ strands from gel is called elution.
$(a)$ In roots,xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii.
$(b)$ Conjoint closed vascular bundles do not possess cambium.
$(c)$ In open vascular bundles,cambium is present in between xylem and phloem.
$(d)$ The vascular bundles of dicotyledonous stem possess endarch protoxylem.
$(e)$ In monocotyledonous root,usually there are more than six xylem bundles present.
Choose the correct answer from the options given below: