Question

why are the casparian strips in roots called as biological checkpoints??​

Answer 1

Answer:

There are 2 pathways

Apoplast, Symplast

Apoplast can't cross casparian strip due to suberin deposit.

Answer 2

Answer:

becoz it do not transfer of water and minerals

the pathway is apoplast to symplast to epidermis to cortex to casparion strips to endodermis to pericycle xylem

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