In which plant group is the structure shown below found?

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$(a)$ Cells with the capacity to divide actively	$(i)$ Vascular tissue
$(b)$ $A$ tissue where all cells are similar in structure and function	$(ii)$ Meristem
$(c)$ Tissue having different types of cells	$(iii)$ Sclereid
$(d)$ Dead cells with highly thickened walls and narrow lumen	$(iv)$ Simple tissue

Select the correct answer from the options given below:

The branch of botany that deals with the internal study of plants is called .........

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

Read the following four statements $(A-D)$:
$(A)$ Both photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane.
$(B)$ In dicot stems,a new cambium originates from cells of pericycle at the time of secondary growth.
$(C)$ Stamens in flowers of Gloriosa and Petunia are polyandrous.
$(D)$ Symbiotic nitrogen fixers occur in free-living state also in soil.
How many of the above statements are right?

Distinguish between the following: Protoxylem and metaxylem.