Plant Mitosis

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Plant Mitosis
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Onion Root Tips Apical meristems in plants are
areas at the tips of roots and stems where
mitosis occurs.
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Note the circled area, this is the region of cell
division in the apical meristem of an onion root
tip.
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Interphase - note the visible nuclear membrane,
nucleus and nucleolus
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Prophase - chromosomes shorten and thicken,
nuclear membrane disappears, spindle fibers start
to form.
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Late prophase or prometaphase
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Metaphase - Chromosomes line up along the
metaphase plate (equatorial plate) and spindle
fibers connect to the chromosomes at the
kinetochore.
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Metaphase - note the spindle fibers
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Anaphase - Sister chromatids separate and move
toward the poles.
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Anaphase - Note the lack of centrioles/asters in
this plant cell.
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Late anaphase - note spindle fibers between the
chromatids.
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Telophase - The cell plate is forming, nucleus is
reforming, and individual chromosomes are hard to
see.
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Two new daughter cells. Mitosis is completed and
cells are in interphase.