Question

explain -apoplast and symplast pathway

Answer 1

A plasmodesmata is a channel in the cell wall, through which certain substances and molecules can be brought into or out of the cell. The exchange of substances with the outer environment and the inner environment of the cell also allows communication between the cells. So, in conclusion, one could say that the function of plasmodesmata in plant cells is transportation and communication.





Both pathways are complimentary helping in diverse situations. Most water is transported via apoplast by simple diffusion or bulk flow, but the suberin in endodermis compels water to take the symplast pathway, finally being deposited in Xylem. Symplast pathway is relatively choosy and slow.

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Answer 2

I) Apoplast Pathway :- Movement of water takes place through cell walls and intercellular spaces. This movement is non-osmotic and occurs due to imbibition. The cellulosic walls of root hair, cortical cells, endodermis and pericycle are hydrophilic and permeable to water so that water moves through them.