Download cytokinesis - The Vignanam

CYTOKINESIS
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CYTOKINESIS - Cytoplasm splits into 2 cells or Cleavage
of cell into two halves
Animal cells - Constriction belt of actin filaments
Plant cells - Cell plate
Fungi and protists - Mitosis occurs within the
nucleus
ANIMAL CELLS
• -Animal cells: Cleavage furrow forms from
outside in.
PLANT CELLS
• -Plant cells: Division plate forms from inside
out.
Cytokinesis In Animal And Plant Cells
100 µm
Cleavage furrow
Contractile ring of
microfilaments
Vesicles
forming
cell plate
Wall of
patent cell
1 µm
Cell plate
New cell wall
Daughter cells
Daughter cells
(a) Cleavage of an animal cell (SEM)
(b) Cell plate formation in a plant cell (SEM)
ANIMAL VS. PLANT MITOSIS
 ANIMAL CELL
Centriole and aster present
 Daughter cells separated by cleavage
furrow
 PLANT CELL
 No visible centriole or aster
 Daughter cells separated by cell plate
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