The primary parameters influencing photosynthetic rate are light intensity, carbon dioxide concentration, and temperature. Other factors such as water stress, nutrient deficiency, and herbivory can also influence plant performance. Light is the main factor affecting photosynthetic rate; increases in light intensity will usually result in increased rates of photosynthesis.
Some plants increase their rate of photosynthesis under bright sunlight. These plants are called photoprotectors. They do this by changing certain properties of their leaves or whole plants. For example, some plants have thick leaves with a high chlorophyll content that help them capture more light. Others have flowers that are white or yellow instead of blue to attract insects which feed on the pollen or nectar and spread out their seeds far from their parent plant. Still others have developed different growth patterns or architectures that bring them into contact with more sunlight-soaking winds or slopes. All of these strategies help plants survive in habitats where they might otherwise be unable to grow.
Plants use photosynthesis to convert sunlight into chemical energy that fuels most life on Earth. The amount of energy available from the sun varies over time but remains constant if we ignore effects like solar flares that cause major disruptions to Earth's climate.
Increased carbon dioxide concentration enhances the rate of photosynthesis if the plant is warm enough and has adequate of light and water. The more CO2 there is around, the more photosynthetic plants will absorb per unit time. This is why scientists think that increasing CO2 levels in the atmosphere will lead to more productive crops.
There are several ways that farmers can increase the amount of CO2 around their plants' photosynthesizing surfaces. First, they can choose to grow carbon-rich crops. These include fruits, vegetables, and grains. Second, they can add carbon dioxide to the air around their plants by using a greenhouse or an open-air polytunnel. Finally, they can burn fossil fuels (oil, natural gas) which release carbon dioxide into the environment. Farmers should avoid releasing large amounts of carbon dioxide into the atmosphere because it can lead to global warming.
Increasing the concentration of carbon dioxide in the atmosphere will also help plants grow faster. This is because more carbon dioxide makes for bigger, better-looking leaves with more efficient use of water. The extra CO2 also boosts the production of sugars which provide energy for plants to grow and produce seeds.
The rate of photosynthesis rises as the number of sunshine hours increases. It should be noted that photosynthesis is a light-dependent biological reaction. It only occurs under ideal conditions of enough light, temperature, water, and carbon dioxide concentration. The more of these factors there are, the faster photosynthesis will occur.
Photosynthesis converts sunlight energy into chemical energy used by plants for growth and maintenance. The four major components of photosynthesis are the chloroplast, cell wall, cytosol, and plasma membrane. Light energy is converted into electrical energy within the chloroplasts which then moves molecules around inside the cells using up their energy. These molecules can then be combined together to form larger molecules such as proteins or carbohydrates which are essential for plant survival.
During daylight hours, plants use the energy in sunlight to make sugar from water and minerals. This process, called photosynthesis, uses the energy from two photons to create one molecule of glucose. Some of this sugar is stored in the leaves' starch reserves, but most is used immediately by the plant's tissues to grow and maintain themselves. Seeds also contain sugars which will become roots and shoots when exposed to soil moisture after they are released from the fruit.
During darkness, all plant activity comes to a halt. Plants need sunlight to survive and reproduce.
The photosynthesis rate, also known as the gross photosynthesis rate, is the overall rate of carbon fixation (reduction of CO2) that does not include the quantity of CO2 lost during respiration. The net photosynthetic rate is the rate of carbon fixation after the quantity of CO2 lost during respiration is subtracted. The photoprotection mechanism prevents photoinhibition of the plant by dissipating excess energy as heat. Under these conditions, the net photosynthesis rate may decrease to zero or near zero while the photosynthesis rate remains high.
Photosynthesis is the process by which plants capture light energy and water vapor into carbon dioxide and oxygen, respectively. Plants use the energy from sunlight to produce carbohydrates from carbon dioxide and water using their chloroplasts and mitochondria. Energy released by the conversion of sunlight to chemical energy is used by plants to carry out other biochemical reactions that are necessary for survival. For example, some of this energy is used to make food for themselves and others so they can grow up and live together in harmony.
Carbon dioxide from the atmosphere and water from the soil combine with solar radiation to produce glucose molecules, which are the basic building blocks of plants. Green plants use the sun's energy to split water molecules to release hydrogen ions and electrons, which are then combined with carbon dioxide to form glucose. The resulting glucose is used by plants to build up their tissues using photosynthesis and oxidized back to carbon dioxide and water when plants die.
As the light intensity increases from low to high, the rate of photosynthesis increases because there is more light available to trigger photosynthesis processes. When exposed to extremely bright light, the rate of photosynthesis decreases rapidly as the light begins to harm the plant. This is called photoinhibition and will be discussed in greater detail below.
Photosynthesis requires energy in the form of light rays converted into chemical energy by plants through the use of chlorophyll. The amount of light energy that reaches the earth's surface is about 400 times more than what plants need for an optimal growth environment. Most of this surplus light energy is absorbed by plants close to the ground where it can reach high levels of absorption. As plants rise above the ground, their exposure to sunlight decreases significantly. Plants at different heights within the same species will have different rates of photosynthesis due to their varying exposures to sunlight.
The amount of sunlight energy that reaches the earth's surface is about 400 times more than what plants need for an optimal growth environment.