Cell Cycle and Cell Division

Q1. Which phase of the prophase I of meiosis I is recognized by the dissolution of the synaptonemal complex and the tendency of the recombined homologous chromosomes of the bivalents to separate from each other except at the sites of crossovers? 
  • Zygotene
  • Pachytene
  • iplotene
  • iakinesis
Q2. All the following events take place during the telophase stage of mitosis except:
  • Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements.
  • Nuclear envelope develops around the chromosome clusters at each pole forming two daughter nuclei.
  • Nucleolus, Golgi complex and ER re-form.
  • Microtubules get organised into spindle fibres.
Q3. Consider the given two statements:
Statement I: In male honeybees, haploid cells divide by mitosis.
Statement II: Higher plants show mitotic divisions only in diploid cells.

 

  • Statement Iis correct andStatement IIis incorrect.
  • Statement Iis incorrect andStatement IIis incorrect.
  • Statement Iis correct andStatement IIis correct.
  • Statement Iis incorrect andStatement IIis correct.