Practise plant-transport mechanism questions by tracing root water pathways, explaining transpiration pull and modelling phloem loading and mass flow.
The diagrams show transverse sections of parts of a plant. Transport tissues are labelled 1 to 6.
Which row shows tissues that mainly transport water and tissues that mainly transport sucrose?
mainly transport
water
mainly transport
sucrose
1 and 3
4 and 6
2 and 3
4 and 5
3 and 5
2 and 6
4 and 6
2 and 3
Which statement correctly describes the movement of solutes in the symplast pathway?
Cell surface membranes regulate the selective absorption of solutes into the symplast pathway.
Plasmodesmata control the movement of solutes from the symplast pathway to the apoplast pathway.
The symplast pathway transports dissolved mineral ions from the soil that cannot be transported by the apoplast pathway.
The movement of solutes through plasmodesmata in the symplast pathway is prevented in the endodermis by suberin.
Which row correctly shows processes required for the movement of water from a root hair cell to the atmosphere?
cohesion
diffusion
evaporation
key
✓
✓
✓
✓
/ = required
✓
✓
not required
✓
✓