Question

5. Photosynthetic adaptations to extreme environments Aa Aa Rubisco carries out photorespiration when the ratio of O2 to CO2 is too high. As a result, certain plants have adaptations meant to keep this ratio low in tissue locations where their photosynthetic cells need to use Rubisco. The following image describes how when these two sets of events occu plants prevent photorespiration. Label the image by identifying where or C3 Carbohydrate M Sunlight ATP HANN and and C-c-c- NADPH GGGG NADPH Calvin Light reactions CO2 cycle ADP + P ADP + P and NADP+ -- GCC and NADP+ H2O Because of the extra energy required to run an additional CO2 capture pathway, these plants have the most competitive advantage in a climate that is . As plants dry out, their stomata can close to prevent loss of water vapour. Adapted plants photorespire often than plants that lack this adaptation. Which of the following statements describe how this plant obtains CO2? Check all that apply. CO2 is fixed by Rubisco. CO2 is temporarily stored as one of the three C atoms in a three-carbon organic compound. In the bundle sheath cells, CO2 is obtained directly from the atmosphere. CO2 is first fixed in the mesophyll cells and released into the bundle sheath cells.

Answer 1

Answer:

5. Photosynthetic adaptations to extreme environments Aa Aa Rubisco carries out photorespiration when the ratio of O2 to CO2 is too high. As a result, certain plants have adaptations meant to keep this ratio low in tissue locations where their photosynthetic cells need to use Rubisco. The following image describes how C4 when these two sets of events occu p lants prevent photorespiration. Label the image by identifying where or Carbohydrate M Sunlight ATP HANN and and C-c-c- NADPH GGGG NADPH Calvin Light reactions CO2 cycle ADP + P ADP + P and NADP+ -- CCC and NADP+ H2O Mesophyll cells Bundle sheath cells Because of the extra energy required to run an additional CO2 capture pathway, these plants have the most competitive advantage in a climate that is hot and dry As plants dry out, their stomata can close to prevent loss of water vapour. Adapted plants photorespire less often than plants that lack this adaptation. Which of the following statements describe how this plant obtains CO2? Check all that apply. CO2 is fixed by Rubisco. CO2 is temporarily stored as one of the three C atoms in a three-carbon organic compound. In the bundle sheath cells, CO2 is obtained directly from the atmosphere. CO2 is first fixed in the mesophyll cells and released into the bundle sheath cells. (correct)