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GO through the following statements regarding a substance which enable pollen grain to tolerate in extremely adverse condition and choose correct option.
I. It form the exine of pollen grain.
II. It is one of the resistant organic material.
III. It contain a aperture called germ pore where it is present.
IV. It can withstand high temperatures and strong acids.
V. Still now no enzyme has been discovered which can degrade it.
BCECE 2013 Mains
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)