Which is correct about transport or conduction of substances

Options

A. Organic food moves up through phloem
B. Organic food moves up through xylem
C. Inorganic food moves upwardly and downwardly through xylem
D. Organic food moves upwardly upwardly and downwardly through phloem

Answer

d

Explanation

Sieve tubes are the conducting elements of phloem that carry the organic nutrients upwardly and downwardly . Organic nutrients absorbed through roots reaches the shoot apex and other parts through phloem cells . Moreover , nutrients are also translocated downwardly through phloem as demonstrated by gidling experiment (Malpighi , 1671) in which removal of ring of bark (including phloem) prevents downward translocation of food and causing starvation and death of roots.