Which of the following statement$(s)$ is/are true?
$(A)$ Uneven thickening of cell wall is characteristic of sclerenchyma.
$(B)$ Periblem forms cortex of the stem and the root.
$(C)$ Tracheids are the chief water transporting elements in gymnosperms.
$(D)$ Companion cell is devoid of nucleus at maturity.
$(E)$ The commercial cork is obtained from $Quercus$ $suber$.

Match the Column-$I$ with Column-$II$ and choose the correct option:

Column-$I$ (characteristics of vascular bundle)	Column-$II$ (Transverse section)
$A$. Radial,tetrarch,cambial ring between xylem and phloem at later stages	$i$. $T.S$ of monocot stem
$B$. Conjoint,open and endarch	$ii$. $T.S$ of dicot root
$C$. Radial,Polyarch,large pith without cambial ring	$iii$. $T.S$ of monocot root
$D$. Conjoint,closed with sclerenchymatous bundle sheath	$iv$. $T.S$ of dicot stem

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?

Distinguish between the following: Protoxylem and metaxylem.

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?