In animal cells, the division of cytoplasm (cytokinesis) is accomplished by:

Answer and explanation

Correct answer: A. Formation of a cleavage furrow that deepens centripetally from the cell periphery to the center

  1. Step 1: Cytokinesis differs fundamentally between plant and animal cells due to the presence of a rigid cell wall in plants.
  2. Step 2: In animal cells, an actomyosin contractile ring forms beneath the plasma membrane at the equator.
  3. Step 3: Constriction of this ring pulls the membrane inward, forming a cleavage furrow that deepens centripetally until it cleaves the cell into two daughter cells.
Answer
Formation of a cleavage furrow that deepens centripetally from the cell periphery to the center.
Why not the others: Formation of a cell plate growing centrifugally is the mechanism in plant cells; Deposition of pectin-rich vesicles forming a middle lamella describes plant cytokinesis; Invagination of the nuclear envelope does not divide the cytoplasm.

Practise more Cell Cycle and Cell Division.

Free questions with an explanation for every one, and full timed NEET UG mock tests.

All Cell Cycle and Cell Division questionsTake a mock test

More Cell Cycle and Cell Division questions