Which of the following are vessel-less angiosperms?

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 $Quercus$ $suber$.

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

Distinguish between the following: Stele and vascular bundle.

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: