alleryThe **major channel** for translocation of food (sucrose) in plants is:
AXylem
BPhloem (specifically sieve tubes)
CBoth equally
DCortex
Answer & Solution
Correct answer: B. Phloem (specifically sieve tubes)
Phloem (sieve tubes, with companion cells) carries sugars, amino acids and other organic molecules from source (leaves) to sink (roots, fruits, growing points).
Xylem carries water + minerals upward only.
Food translocation can be bidirectional (e.g. seasonally to/from storage).
Keep practising Unit 2G: Osmoregulation & Membrane Dynamics
Browse all Unit 2G: Osmoregulation & Membrane Dynamics questions for AP Biology, or explore more Biology topics.
Related questions
Cells that possess a membrane-bound, well-organised nucleus are called:A feature common to prokaryotes and many eukaryotes (e.g. plants, fungi) isRibosomes are organelles that are:The scientist who first observed and described a living cell was:DNA content at various cell cycle phases (C = haploid DNA content):Number of bivalents (paired homolog pairs) at metaphase I of a cell with 2n = 12:Estrogen and progesterone, secreted mainly by ovaries during reproductive cycle, are:Cortisol secretion peaks in the: