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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

(4)

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(a) Aseptate and multinucleate   (b) Septate and multinucleate   (c) Aseptate and uninucleate   (d) Septate and uninucleate   Answer. (b) The mycelium of Aspergillus consist of branch septate hyphae. Cells of hyphae are multinucleate.  (197)

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