What is the relationship between photosynthesis and respiration? The difference and connection between photosynthesis and aerobic respiration

In biology class, we all know that the organic matter decomposed by plant respiration is the product of photosynthesis. Without the organic matter produced by photosynthesis, respiration cannot proceed. So what is the difference and connection between photosynthesis and aerobic respiration? Let's start today's study and discussion with examples of the application of photosynthesis in agricultural production. I hope you will have a better understanding of photosynthesis.

Contents of this article

1. The relationship between photosynthesis and respiration

2. The difference and connection between photosynthesis and aerobic respiration

3. Examples of the application of photosynthesis in agricultural production

The relationship between photosynthesis and respiration

The relationship between photosynthesis and respiration: Respiration and photosynthesis are interdependent.

Respiration and photosynthesis are interdependent because of:

1. The organic matter decomposed by plant respiration is the product of photosynthesis. Without the organic matter produced by photosynthesis, respiration cannot proceed.

2. When plants are photosynthesizing, the energy needed for the absorption of raw materials and the transportation of products is released by respiration. Without the energy provided by respiration, photosynthesis cannot proceed.

The difference and connection between photosynthesis and aerobic respiration

Aerobic respiration provides the main energy for the physiological activities of cells, which provides energy for the material transport of photosynthesis. From the perspective of carbon cycle, the carbon dioxide released by aerobic respiration happens to be the raw material for chloroplast photosynthesis, while the oxygen needed by mitochondria is provided by photosynthesis. Both require suitable temperatures and enzyme catalysis, although there are differences in the optimal temperature. From the perspective of material metabolism, aerobic respiration is catabolism, while aerobic respiration of chloroplasts is anabolism. Aerobic respiration does not require light, while photosynthesis of chloroplasts requires light. From the perspective of carbon cycle, aerobic respiration releases carbon dioxide, while photosynthesis fixes carbon dioxide.

Examples of the application of photosynthesis in agricultural production

Application in greenhouse vegetable cultivation:

1. Use blue plastic in the greenhouse to increase the light intensity, and use electric lights at night to appropriately extend the lighting time, which is beneficial to the light reaction of photosynthesis and increases the synthesis of organic matter.

2. Maintain a high concentration of carbon dioxide in the greenhouse, such as using organic fertilizers and opening the plastic greenhouse for ventilation in the morning. In winter, farmers often burn briquettes or spray dry ice in the plastic greenhouse to increase the concentration of carbon dioxide. When planting crops, "straighten the rows and open the wind", etc., which are conducive to photosynthesis and increase vegetable yields.

3. Increase the temperature of the greenhouse during the day and lower the temperature at night, that is, increase the temperature difference between day and night. The former is conducive to the synthesis of sugars, the product of photosynthesis, and the latter reduces respiration, which can reduce the decomposition of organic matter and thus increase yield.

4. Reasonable density planting helps plants absorb carbon dioxide and make full use of light, thereby maximizing yield.