Even when light gets to a plant, the plant doesn't use all of it

Animals eat food to get their energy. But green plants don't. Instead they make their own food, glucose, in a process called photosynthesis. We say that plants can photosynthesise.

It actually uses only certain colors to make photosynthesis happen

All plants use photosynthesis, so they all need some sunlight

Over 90% of plants use C 3 carbon fixation, ..

C3 plants have the disadvantage that in hot dry conditions their photosynthetic efficiency suffers because of a process called . When the CO2 concentration in the drops below about 50 ppm, the catalyst that helps to fix carbon begins to fix oxygen instead. This is highly wasteful of the energy that has been collected from the light, and causes the rubisco to operate at perhaps a quarter of its maximal rate.

It is important to note that not all plants photosynthesize

Photosynthesis does the opposite of respiration. Carbon dioxide is absorbed and oxygen is produced. In order to study respiration in green plants we must block out the light, because although green plants respire all the time they only photosynthesize in the light.

in nearly all monocotyledonous and dicotyledonous lineages that use the two-cell mode of C 4 photosynthesis

photosynthesis | Importance, Process, & Reactions - …

C4 plants almost never saturate with light and under hot, dry conditions much outperform . They use a two-stage process were CO2 is fixed in thin-walled mesophyll cells to form a 4-carbon intermediate, typically malate (malic acid). The reaction involves phosphoenol pyruvate () which fixes CO2 in a reaction catalyzed by PEP-carboxylate. It forms oxaloacetic acid (OAA) which is quickly converted to malic acid. The 4-carbon acid is actively pumped across the cell membrane into a thick-walled bundle sheath cell where it is split to CO2 and a 3-carbon compound.

Plants - Cool Science Facts for Kids About Plants

Under moderate temperature conditions when C3 plants have sufficient water, the supply of carbon dioxide is abundant and photorespiration is not a problem. The CO2 concentration of the atmosphere as of 2004 was about 380 ppm and this CO2 freely diffuses through the stomata of leaves and across the membranes of the while water diffuses out through the stomata. But during hot and dry conditions, the stomata close to prevent excessive water loss and the continuing fixation of carbon in the dramatically reduces the relative concentration of CO2. When it reaches a critical level of about 50 ppm the rubisco stops fixing CO2 and begins to fix O2 instead. Even though the detoured process feeds some PGA back into the cycle, the photorespiration process causes rubisco to operate at only about 25% of its optimal rate.

20/11/2017 · Photosynthesis captures the energy from visible light but it doesn't use all ..

How does algae use photosynthesis? - Quora

The drawback to C4 photosynthesis is the extra energy in the form of that is used to pump the 4-carbon acids to the bundle sheath cell and the pumping of the 3-carbon compound back to the mesophyll cell for conversion to PEP. This loss to the system is why C3 plants will outperform C4 plants if there is a lot of water and sun. The C4 plants make some of that energy back in the fact that the rubisco is optimally used and the plant has to spend less energy synthesizing rubisco.

The regenerated RuBP is used to start the Calvin cycle all over again. PHOTOSYNTHESIS VARIATIONS A majority of plants use these steps in photosynthesis.

Learn About Photosynthesis Formula - ThoughtCo

The acidity was found to arise from the opening of their stomata at night to take in CO2 and fix it into malic acid for storage in the large vacuoles of their photosynthetic cells. It could drop the pH to 4 with a malic acid concentration up to 0.3M . Then in the heat of the day, the stomata close tightly to conserve water and the malic acid is decarboxylated to release the CO2 for fixing by the Calvin cycle. PEP is used for the initial short-term carbon fixation as in the , but the entire chain of reactions occurs in the same cell rather than handing off to a separate cell as with the C4 plants. In the CAM strategy, the processes are separated temporally, the initial CO2 fixation at night, and the malic acid to Calvin cycle part taking place during the day.

Red and blue are the wavelengths that are most useful in the photosynthesis process, although all wavelengths except one ..

Organisms That Use Photosynthesis.

The CAM plants represent a metabolic strategy adapted to extremely hot and dry environments. They represent about 10% of the plant species and include cacti, orchids, maternity plant, wax plant, pineapple, Spanish moss, and some ferns. The only agriculturally significant CAM plants are the pineapple and an Agave species used to make tequila and as a source of fiber.