A maize seedling was cultivated in soil containing lanthanum ions that had been tagged with a chemical which fluoresces under ultraviolet light. The diagram shows what was seen when a section of root was viewed with a light microscope under ultraviolet illumination. Which conclusion about the transport of lanthanum ions in maize roots is correct?
- AThe ions are not transported through the apoplast pathway or the symplast pathway.
- BThe ions are transported through the apoplast pathway only.
- CThe ions are transported through the apoplast pathway and symplast pathway.
- DThe ions are transported through the symplast pathway only.