Why Calvin cycle takes place in mesophyll cells of c3 plants but why n...
Calvin Cycle in Mesophyll Cells of C3 Plants
The Calvin cycle is a process that takes place in the chloroplasts of photosynthetic organisms. This cycle is responsible for the conversion of carbon dioxide into glucose, which is used by the plant as a source of energy. In C3 plants, the Calvin cycle takes place in the mesophyll cells of the leaves.
Mesophyll Cells in C3 Plants
Mesophyll cells are specialized cells that are found in the leaves of plants. These cells are responsible for carrying out the process of photosynthesis by absorbing light energy from the sun and converting it into chemical energy. In C3 plants, the mesophyll cells are responsible for carrying out the Calvin cycle, which is the process of converting carbon dioxide into glucose.
Why Calvin Cycle does not take place in Mesophyll Cells of C4 Plants?
C4 plants are a type of plant that has adapted to hot and dry environments. These plants have developed a unique mechanism for carrying out photosynthesis, which involves the use of a specialized type of cell called a bundle sheath cell. The Calvin cycle does not take place in the mesophyll cells of C4 plants because of this adaptation.
Bundle Sheath Cells in C4 Plants
Bundle sheath cells are specialized cells that are found in the leaves of C4 plants. These cells are responsible for carrying out the Calvin cycle, which is the process of converting carbon dioxide into glucose. The reason that the Calvin cycle does not take place in the mesophyll cells of C4 plants is that these cells have evolved a unique mechanism for concentrating carbon dioxide in the bundle sheath cells. This mechanism involves the use of an enzyme called PEP-carboxylase, which is able to fix carbon dioxide into a four-carbon molecule.
Conclusion
In conclusion, the Calvin cycle takes place in the mesophyll cells of C3 plants, but not in the mesophyll cells of C4 plants. This is because C4 plants have evolved a unique mechanism for concentrating carbon dioxide in the bundle sheath cells, which allows them to carry out photosynthesis more efficiently in hot and dry environments.