Question

The loss of water from a plant by transpiration cools the leaf. Movement of water in transpiration requires both adhesion to the conducting walls and wood fibers of the plant and cohesion of the molecules to each other. A scientist wanted to increase the rate of transpiration of a crop species to extend its range into warmer climates. The scientist substituted a nonpolar solution with an atomic mass similar to that of water for hydrating the plants. What do you expect the scientist's data will indicate from this experiment

Answer 1

Answer:

Transpiration will tend to zero since nonpolar compounds don't have the required properties for cohesion and adhesion

Explanation:

Adhesion and cohesion are two properties that make water essential for life. Cohesion is required to stick water molecules; while adhesion is the sticking of water molecules to other polar surfaces such as, for example, a plant leaf

Answer 2

Answer:

This will affect respiration rate, with readings falling to  Zero, due to lack of mass flow, and therefore capillarity.

Explanation:

Non-polar substances lacks the dipole-dipole interactions   and therefore hydrogen bonding, which allow  forces of adhesion and cohesion, for water molecules to stick together, for mass flow and capillarity.

Capillarity in this scenario is the movements of water molecules through the(columns)  xylem vessels to the leaves, and it is aided by adhesion and cohesion forces.Thus  a non -polar substance lacks, covalent  -bonding(since to unequal distribution of charges e-/p+  ), therefore no dipole-dipole interaction, consequently no hydrogen bonding.The molecules are not held together (cohesion,) and with the walls of the xylem vessels(adhesion).

Consequently, this substance can not move by  mass flow to  through the xylem to reach the leave surfaces( failed capillarity), thus  transpiration  rate reduces and  reading is zero..