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STD 11 - 10. Cell cycle and cell division — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 10. Cell cycle and cell division1 Mark
MCQ
Choose the correct combination of options to select the correct statement for prophase

$I.$ Chromosomal material condenses to form compact mitotic chromosomes

$II.$ The assembly of mitotic spindle is initiated by the microtubules

$III.$ Cells do not show organelles when viewed under the prophase

$IV.$ The nucleolus or nucleoli degenerate completely

  • A
    $I$ only
  • B
    $II$ and $III$
  • C
    $I$ and $II$
  • ✓
    All of these
✓

Answer

Correct option: D.
All of these
d
At the end of prophase, several characteristic events can be observed. Chromosomal material condenses to form compact mitotic chromosomes. Two chromatids attach together to form chromosomes

Assembly of mitotic spindle is initiated by, microtubules (proteinaceous components) of the cell cytoplasm. When observed under the microscope cells at the last stage of prophase, do not shows cell organelles like, Golgi complexes, endoplasmic reticulum, nucleolus and the nuclear envelope

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