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4. The cell wall is permeable and not a semipermeable structure can be best deduced from the passage of water and mineral salts from

(a)  Soil into periplasmic space of root hairs

(b)  Root hairs to cortical cells

(c)   Cortical cells to pericycle

(d)  Pericycle to trachea

Ans.  a

(7)

5/5 - (1 vote)

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