A-LevelBiologyThe mitotic cell cycle9700/12 · Oct/Nov 2022 · Q211 Mark
Stained onion cells undergoing mitosis were observed using a microscope. Which row is correct for mitosis in plant cells?
Aprophase: centrioles visible, metaphase: chromosomes pair up at the equator, anaphase: two telomeres are visible on each chromatid, telophase: two nuclear membranes form
Bprophase: centromeres present, metaphase: chromosomes align at the equator, anaphase: chromosomes replicate to form chromatids, telophase: centrioles disappear
Cprophase: each chromosome is visible as two chromatids, metaphase: centromeres attach to spindle fibres, anaphase: chromatids separate and migrate to opposite poles, telophase: chromosomes decondense
Dprophase: spindle fibres formed by centrioles, metaphase: centromeres attach to spindle fibres, anaphase: chromatids are pulled apart by centrioles, telophase: spindle fibres form new nuclear membranes
✓ Correct answer
C: prophase: each chromosome is visible as two chromatids, metaphase: centromeres attach to spindle fibres, anaphase: chromatids separate and migrate to opposite poles, telophase: chromosomes decondense
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