$A$ : 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.

Identify the $(A), (B), (C)$ and $(D)$ in the given figures and select the correct option $:-$

Which of the following shows physiological xerophytic characters?

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?

Which one is not a trait of xerophytes?