Zusammenfassung der Ressource
Transport in
Plants
- Vascular Bundle
- xylem
- hollow, dead
cells
- joined
end-to-end
- long, open
tube
- carry water from root to
stems/leaves
- no cytoplasm +
nucleus
- cellulose + lignin
walls
- lignin is strong; keeps plant
upright
- lignified xylem is found in
wood
- phloem
- carries sucrose + amino acids from leaves to roots/flowers/etc.
- cells joined
end-to-end
- plants have a branching shape; large surface
area
- easier diffusion of carbon
dioxide