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

33. The organelle that coordinates the assembly and orientation of cortical microtubules, which direct the deposition of cellulose microfibrils in expanding plant cells, is the

A. Centriole pair
B. Microtubule Organizing Center (MTOC)
✓
C. Nucleolus
D. Dictyosome

📝 Explanation

Plant cells lack discrete centrioles but possess diffuse, membrane-associated MTOCs that organize the cytoskeletal tracking networks.

📖 Additional Information

  • Centriole pair
  • Microtubule Organizing Center (MTOC)
  • Nucleolus
  • Dictyosome

Plant cells lack discrete centrioles but possess diffuse, membrane-associated MTOCs that organize the cytoskeletal tracking networks.

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