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BIO NMDCAT CELL STRUCTURE & FUNCTION
nmdcat.online July 3, 2026

60. The mechanical force that drives the elongation and expansion of a newly divided plant daughter cell is provided by

A. The pulling action of actin filaments
B. Osmotic water uptake generating turgor pressure against a flexible wall
✓
C. The rapid deposition of secondary lignin
D. Direct binary fission of internal plastids

📝 Explanation

Turgor pressure acts as a hydraulic jack, stretching the primary wall when specific enzymes loosen the cross-linked cellulose fibers.

📖 Additional Information

  • The pulling action of actin filaments
  • Osmotic water uptake generating turgor pressure against a flexible wall
  • The rapid deposition of secondary lignin
  • Direct binary fission of internal plastids

Turgor pressure acts as a hydraulic jack, stretching the primary wall when specific enzymes loosen the cross-linked cellulose fibers.

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