Question
In the absence of condensation, the latent heat flux from a leaf is the latent heat of vaporization times the rate of this process. For 10 points each:
[10e] Name this process of water loss from plant tissues to the atmosphere.
ANSWER: transpiration [accept evapotranspiration; prompt on evaporation]
[10h] The rate of transpiration equals the vapor pressure deficit times this quantity. An optimality-based model of this quantity by Belinda Medlyn and colleagues has largely displaced the empirical Ball–BerryBall-Berry-LeuningLeuning model.
ANSWER: stomatal conductance [org-sub-s]
[10m] This theory posits that transpiration and intermolecular attraction drive the ascent of sap’s ascent through the xylem. This theory predicts that tissue conductances determine the evaporative flux via an analog of Ohm’s law.
ANSWER: cohesion-tension theory [or C-T theory]
Data
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total |
|---|---|---|---|---|---|
| Chicago A | Duke A | 10 | 0 | 0 | 10 |
| Claremont A | WUSTL B | 10 | 0 | 0 | 10 |
| Columbia B | Johns Hopkins A | 10 | 0 | 0 | 10 |
| Cornell B | MIT A | 10 | 0 | 10 | 20 |
| Florida A | Chicago B | 10 | 0 | 0 | 10 |
| Georgia Tech A | Brown A | 10 | 10 | 0 | 20 |
| Harvard A | Chicago C | 10 | 0 | 0 | 10 |
| McGill A | Yale B | 10 | 0 | 10 | 20 |
| Michigan A | Minnesota B | 0 | 0 | 0 | 0 |
| Minnesota A | UC Berkeley A | 10 | 0 | 0 | 10 |
| North Carolina A | Indiana A | 10 | 0 | 0 | 10 |
| Northwestern A | Columbia A | 10 | 0 | 10 | 20 |
| Ohio State A | Stanford A | 10 | 0 | 0 | 10 |
| Penn State A | Rutgers A | 10 | 0 | 0 | 10 |
| UC Berkeley B | NYU A | 10 | 0 | 10 | 20 |
| Vanderbilt A | Florida B | 10 | 0 | 0 | 10 |
| Virginia A | South Carolina A | 10 | 0 | 0 | 10 |
| Yale A | WUSTL A | 10 | 0 | 0 | 10 |