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STD 12 - 1. sexual reproduction in flowering plants — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 1. sexual reproduction in flowering plants4 Marks
MCQ
Which of the following statements is correct?
  • A
    Sporopollenin can be degraded by enzymes.
  • B
    Sporopollenin is made up of inorganic materials.
  • ✓
    Sporopollenin can withstand high temperatures as well as strong acids and alkalis.
  • D
    Sporopollenin can withstand high temperatures but not strong acids.
✓

Answer

Correct option: C.
Sporopollenin can withstand high temperatures as well as strong acids and alkalis.
c
(c) : Pollen grain is a haploid, unicellular body. It is cuticularised and the cutin is of special type called sporopollenin, which is resistant to chemical and biological decomposition. It can withstand high temperatures as well as strong acids and alkalis. This is why, pollen wall is preserved for long periods in fossil deposits. In addition pollen wall possesses proteins for enzymatic and compatability reactions.

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