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

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 $Quercus$ $suber$.

$A$ : Bast fibres are collenchymatous fibres.
$R$ : Fibres are absent in secondary phloem.

Select the correct options from the following:
$(i)$ Sapwood / Heartwood appears dark brown in color.
$(ii)$ Generally,pith is absent in Dicot root / Monocot root.

Explain plant anatomy and its importance.

Which of the following shows physiological xerophytic characters?