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Cell Cycle and Cell Division — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYCell Cycle and Cell Division1 Mark
MCQ
Mitotic stages are not observed in:
  • A
    Cosmarium
  • ✓
    $E.$ coli
  • C
    Saccharomyces
  • D
    Chlorella
✓

Answer

Correct option: B.
$E.$ coli
Mitosis is shown by eukaryotes.
It is not observed in $E.$ coli.
This is a prokaryote as it lacks a well$-$defined nucleus.
In these organisms the nuclear membrane is absent and the genetic material is present floating in the cytoplasm.
Hence these organisms divide by binary fission in which the parent body divides to form the daughter cells in which the genetic material and cytoplasm is divided between the offsprings.

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