how does temperature affect the rate of photosynthesis?
So how can these factors have an effect on the rate of photosynthesis? Lets start off with the light intensity. When the light intensity is poor, there is a shortage of ATP and NADPH, as these are products from the light dependent reactions. Without these products the light independent reactions can't occur as glycerate 3-phosphate cannot be reduced. Therefore a shortage of these products will limit the rate of photosynthesis. When the carbon dioxide concentration is low, the amount of glycerate 3-phosphate produced is limited as carbon dioxide is needed for its production and therefore the rate of photosynthesis is affected. Finally, many enzymes are involved during the process of photosynthesis. At low temperatures these enzymes work slower. At high temperatures the enzymes no longer work effectively. This affects the rate of the reactions in the Calvin cycle and therefore the rate of photosynthesis will be affected.
What is the effect of temperature on photosynthesis? - …
A limiting factor is a factor that controls a process. Light intensity, temperature and carbon dioxide concentration are all factors which can control the rate of photosynthesis. Usually, only one of these factors will be the limiting factor in a plant at a certain time. This is the factor which is the furthest from its optimum level at a particular point in time. If we change the limiting factor the rate of photosynthesis will change but changes to the other factors will have no effect on the rate. If the levels of the limiting factor increase so that this factor is no longer the furthest from its optimum level, the limiting factor will change to the factor which is at that point in time, the furthest from its optimum level. For example, at night the limiting factor is likely to be the light intensity as this will be the furthest from its optimum level. During the day, the limiting factor is likely to switch to the temperature or the carbon dioxide concentration as the light intensity increases.
This ability allows these warm blooded marine species to migrate over vast distances through various temperatures without problems and include some of the animals on Earth with the longest migrations.
How does changing the temperature affect the rate of Photosynthesis
Optimum or Preferred
Common Name of Fish Temperature, ° C.
Rainbow trout 13
Chum salmon 13.5
Sockeye salmon 15
Lake trout 15-17
Coho salmon 20
Greenthroat darter 20-23
Largemouth bass 22-25
Effects of high temperature on photosynthesis and …
CThe water content of the atmosphere varies about 100-fold between the hot and humid tropics and the cold and dry polar ice deserts (see right and ). Clouds have a complex and controversial relationship in global warming as increased cloud cover insulates the planet so contributing to global warming by preventing heat loss, but also reflects back sunlight into space, so cooling the planet; with relative effects dependent upon the type and height of the clouds. If increasing water vapor leads to warmer temperatures, more water vapor will be incorporated into the atmosphere and warming and water absorption will increase in a spiraling cycle. By contrast, if increased cloud cover leads to cooling then the system will be stabilized. Changes in other gasses, such as CO2 will feed into these effects . On balance, it appears that increased atmospheric CO2 is feeding into a spike in an otherwise cooling Earth.
How Does Water Temperature Affect Plants? | Hunker
If the temperature of a reach of stream is raised by 5-10° C., it is probable that cold water fish will avoid this reach and that they will be replaced by warm water fish. Thus, without any direct visible mortality, the character of the fish and supporting aquatic life will change. It will also change because the temperature impacts successful spawning and hatching of eggs.
Water temperature affects plants in many ways
As stated earlier, fish have optimum temperatures for rates of growth and reproduction. Given a choice, they also show preference for water of a definite temperature range. The following optimum or preferred temperatures have been reported.