Mrs. Wright (who is always right, just ask her), is caring for her son's prize tomato plants while he attends a Tomatologist Conference.
She brings them into the house due to a pending ice storm and places them in a dark room. She provides plenty of water and soil nutrients, but does not turn on the lights to conserve energy.
Which of the following is most likely to occur first?
a
Light dependent cycle will continue at the same rate with adequate water and nutrients.
b
Fermentation will begin in the chloroplasts of the leaf cells.
c
Calvin cycle will continue fas long as the products from the light dependent cycle and CO2 are available.
d
Photosynthesis will end abruptly, as Mrs. Wade is a plant murderer.
c
Calvin cycle will continue as long as the products from the light dependent cycle and CO2 are available.
The correct answer is c) Calvin cycle will continue as long as the products from the light dependent cycle and CO2 are available.
To determine which of the given options is most likely to occur first, let's analyze each option and the conditions described in the scenario.
a) The light-dependent cycle relies on the presence of light to occur. Since Mrs. Wright has placed the tomato plants in a dark room without turning on the lights, it is unlikely that the light-dependent cycle will continue at the same rate.
b) Fermentation is not a process that typically occurs in the chloroplasts of leaf cells. It is more commonly associated with the breakdown of sugars in the absence of oxygen. Therefore, fermentation in the chloroplasts of leaf cells is not a likely occurrence.
c) The Calvin cycle is the second stage of photosynthesis and is independent of light. As long as the products from the light-dependent cycle (ATP and NADPH) and an adequate supply of carbon dioxide (CO2) are available, the Calvin cycle can continue. Therefore, this option is a possibility.
d) Mrs. Wright's actions of bringing the tomato plants indoors and providing water and nutrients suggest that she is taking care of them rather than being a plant murderer. So, it is unlikely that photosynthesis will abruptly end due to her actions.
Based on the scenario and the information provided, option c) - "The Calvin cycle will continue as long as the products from the light-dependent cycle and CO2 are available" - is the most likely occurrence.