A contractile mid-body forms during cytokinesis in
A
Animal
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B
Higher plants
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C
Fungi
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D
Algae
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Solution
The correct option is C Animal A contractile midbody forms during cytokinesis in animals. A contractile ring, made of non-muscle myosin II and actin filaments, assembles equatorially at the cell cortex. Myosin II uses the free energy released when ATP is hydrolyzed to move along these actin filaments, constricting the cell membrane to form a cleavage furrow. Continued hydrolysis causes this cleavage furrow to ingress.