1. Respiration is a cellular process to obtain chemical energy from the oxidation of organic molecules. the oxidation soil nutrients. the oxidation of water. the oxidation of plant tissues. 2. Since stomata are the same pores through which carbon dioxide enters into the leaves, the result of their closure is a reduction in photosynthesis. True False 3. The air is moist if VPD (Vapour Pressure Deficit) is high. True False 4. Photosynthesis of a shoot can be measured by enclosing it within a chamber and following the change of water vapour concentration in the air of this chamber. PAR radiation next to the chamber. carbon dioxide concentration in the air of this chamber. air temperature in this chamber. 5. As VPD increases, photosynthesis decreases due to the closure of the stomata. True False 6. The effect of light on photosynthesis has a clear saturating pattern: more light results in more photosynthesis but eventually leaves cannot take full advantage of all the extra light. True False 7. ”Stage of acclimation” refers to the seasonality of the litter fall activity. the photosynthetic activity. the flowering activity. the growth activity. 8. Plants open its stomata to avoid losing too much water. True False 9. Photosynthesis shuts down if the temperature of previous night has been lower than -5 celsius. -10 celsius. 0 celsius. 5 celsius. 10. REW stands for ”Relative Extractable Water” True False 11. When there is low soil moisture, plants close its stomata pores which then decreases photosynthesis. True False 12. In trees, approximately half of the carbon bound in photosynthesis is used for construction of new biomass. True False 13. Photoinhibition means the decrease in photosynthesis due to exposure to excess of CO2. exposure to excess of light. exposure to shortage of soil moisture. exposure to high temperature. 14. Leaf area increases with stand age, resulting in a decreasing rate of photosynthesis in the stand. True False 15. The stage of acclimation at any given day depends on the temperatures experienced by the plant during the previous months. True False Loading … Question 1 of 15