1) what are the conducting elements in xylem? a) tracheids b) vessels c) both a and b d) none of the above 2) what are the conducting elements in phloem ? a) sieve tubes b) phloem fibres c) phloem parenchyma d) none of the above 3) which one is correct for root hairs? a) provide larger surface area for absorption. b) sap is in high concentration inside the plant c) cell wall is freely permeable and cell membrane is selectively permeable d) all of the above

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