BIO NMDCAT CELL STRUCTURE & FUNCTION

nmdcat.online July 3, 2026

50. The target structure for the assembly of the phragmoplast during plant cell cytokinesis is composed primarily of

A. Actin microfilaments

B. Microtubules derived from the fragments of the mitotic spindle

✓

C. Extracellular cellulose fibers

D. Invaginating plasma membrane rings

📝 Explanation

The phragmoplast is an array of microtubules and filaments that forms during late mitosis, guiding Golgi vesicles to the cell plate site.

📖 Additional Information

Actin microfilaments
Microtubules derived from the fragments of the mitotic spindle
Extracellular cellulose fibers
Invaginating plasma membrane rings

The phragmoplast is an array of microtubules and filaments that forms during late mitosis, guiding Golgi vesicles to the cell plate site.

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