IB Biology B3.2.9 Stem tissue distribution
IB Biology B3.2.9 Stem tissue distribution
Practise recognising vascular tissue positions in plant stems and linking xylem or phloem location to water, dye or sugar transport.
How this is tested
- interpret stem micrographs to locate xylem, phloem and vascular bundles
- describe vascular bundles as a ring, with xylem inward and phloem outward
- apply dye or radioactive sugar evidence to infer which stem tissue transported it