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Model Paper 9 — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceModel Paper 91 Mark
MCQ
A eukaryotic nucleus has a:
  • A
    non-porous, single membrane
  • B
    porous, single membrane
  • ✓
    porous, double membrane
  • D
    non-porous, double membrane
✓

Answer

Correct option: C.
porous, double membrane
(c) porous, double membrane
Explanation: The bounding structure of the eukaryotic nucleus. Composed of two phospholipid bilayers with the outer one connected to the endoplasmic reticulum. Double membrane structure riddled with pores that surround deoxyribonucleic acid in eukaryotes. The nuclear pores, like guards at an important government building, are very strict.

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