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?

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:

Match the following:

Column-$I$	Column-$II$
$(a)$. Hypodermis in dicot stem	$(i)$. Absent
$(b)$. Pericycle in dicot stem	$(ii)$. Parenchymatous
$(c)$. Ground tissue in monocot stem	$(iii)$. Collenchymatous
$(d)$. Phloem parenchyma in monocot stem	$(iv)$. Sclerenchymatous

Write the precise function of:
$(a)$ Sieve tube
$(b)$ Interfascicular cambium
$(c)$ Collenchyma
$(d)$ Aerenchyma

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

Distinguish between the following: Stele and vascular bundle.