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Apoplast transport of water in plants take place :

  • A.Through non-living portion of the plant
  • B.Through living cells of the plant
  • C.By both living and non-living portion of the plant
  • D.Through plasmodesmata

Answer: A

Apoplast transport takes place through non-living portion of the plant.

The apoplast is the continuous system of cell walls, intercellular spaces and xylem vessels outside the plasma membranes. Water moving by the apoplastic route travels through these non-living spaces without crossing any membrane, until the Casparian strip of the endodermis blocks it.

Movement through living cells is the symplast route, which passes from cytoplasm to cytoplasm through plasmodesmata, so the options naming living cells or plasmodesmata describe the symplast, and the 'both' option mixes the two routes.

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