If a plant cell immersed in distilled water has a Ψs of -0.7 Mpa and a Ψw of 0 MPa, what is the cell’s Ψp?

1. 0 Mpa	2. -0.3 Mpa
3. +0.7 MPa	4. -0.7 MPa

The movement of water through the root layers is ultimately symplastic in the:

In the cohesion-tension-transpiration pull model, the upward pull of water is transmitted to other water molecules by cohesion which is caused by:

The opening of stomata is facilitated by:
1. uptake of H⁺ ions by guard cells
2. loss of K⁺ ions from the guard cells
3. radial orientation of cellulose microfibrils in the cell walls of the guard cells
4. loss of turgor in the guard cells

In plants, the pressure component of water potential is most often negative in:

Translocation in phloem always occurs from:
1. Sugar source to a sugar sink
2. Sugar sink to a sugar source
3. Leaf to a root
4. Leaf to xylem and then to phloem

What will be the direction of flow of water when a plant cell is placed in a hypotonic solution?
1. Water will flow in both directions.
2. Water will flow out of the cell.
3. Water will flow into the cell.
4. No flow of water will happen in any direction.

For most plants, in late spring, phloem transports:
1. amino acids from the root source to the symbiotic fungal sink.
2. sugars from the leaf source to the apical meristem sink.
3. nucleic acids from the flower source to the root sink.
4. sugars from the stem source to the root sink.

All the following will be a selective advantage in dry, hot conditions except:
1. CAM pathway
2. reduced leaves with stomata on the lower surface
3. a thick cuticle covering the fleshy leaves
4. mutant unable to produce ABA

Mangrove plants are able to survive in water logged regions as their pneumatophores have:
1. Stomata
2. Halophytes
3. Parenchyma
4. Lenticels