Plants+2


 * Assessment Items from the Plants 2 Small Group**

Plants 2 Group: Joan Sharp, Tina Hartney, David Puthoff

Compare the roles of photosynthesis and respiration in plants.
 * Learning Objective:**


 * Formative Assessment**


 * Small group activity:**

CO2 has been labeled by 14C and taken in through the stomata of a mature leaf. Working in groups of 3 to 4, diagram and label the potential pathway and processes the carbon atom undergoes from introduction to either: A. storage in the root as starch, or B. incorporation into a sugar with later release as a gas.

Be sure to show and identify molecules that 14C could become part of.


 * Clicker Question:**

For each plant structure, chose the best answer option
 * 1) leaf mesophyll cell
 * 2) xylem vessel element
 * 3) root cell
 * 4) below ground germinating seed
 * 5) above ground portion of a young seedling

Answer Options:
 * 1) photosynthesis only
 * 2) respiration only
 * 3) both photosynthesis and respiration
 * 4) neither photosynthesis or respiration

Summative Assessment


 * Multiple Choice – Two Tier:**

Treatment 1: light/no water (petri dish of seeds) Treatment 2: light/water (petri dish with healthy young seedlings) Treatment 3: No light/water (petri dish with yellowish young seedlings- taller than treatment 2)

Order the dry mass from lowest to highest. a. Treatment 1, 2, 3 b. Treatment 2, 3, 1 c. Treatment 3, 1, 2 d. Treatment 3, 2, 1 e. Treatments are equal, i.e. all have the same dry mass.

Explain the rationale for your choice.