What CO2 level is best for photosynthesis?
For most crops the saturation point will be reached at about 1,000–1,300 ppm under ideal circumstances. A lower level (800–1,000 ppm) is recommended for raising seedlings (tomatoes, cucumbers and peppers) as well as for lettuce production.
What light intensity temperature and CO2 level will maximize the rate of photosynthesis?
To maximize the rate of photosynthesis, I think the light intensity will be around 90% whilst the CO2 level should be around 700ppm.
What light intensity is best for photosynthesis?
The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm). Therefore, the best light sources for photosynthesis should ideally emit light in the blue and red ranges.
How does light intensity and carbon dioxide levels affect rates of photosynthesis?
As light intensity increases, the rate of photosynthesis will increase as long as other factors are in adequate supply. As the rate increases, eventually another factor will come into short supply. The graph below shows the effect of low carbon dioxide concentration.
What is the optimal CO2 level?
400–1,000 ppm: typical level found in occupied spaces with good air exchange. 1,000–2,000 ppm: level associated with complaints of drowsiness and poor air. 2,000–5,000 ppm: level associated with headaches, sleepiness, and stagnant, stale, stuffy air.
How does light intensity affect the rate of photosynthesis?
As you rise from low light intensity to higher light intensity, the rate of photosynthesis will increase because there is more light available to drive the reactions of photosynthesis.
How does CO2 levels affect photosynthesis?
Studies have shown that higher concentrations of atmospheric carbon dioxide affect crops in two important ways: they boost crop yields by increasing the rate of photosynthesis, which spurs growth, and they reduce the amount of water crops lose through transpiration.
What is the optimum CO2 level?
CO2
| 250-400ppm | Normal background concentration in outdoor ambient air |
| 400-1,000ppm | Concentrations typical of occupied indoor spaces with good air exchange |
| 1,000-2,000ppm | Complaints of drowsiness and poor air. |
How does CO2 affect photosynthesis?
Elevated (CO2) increases the availability of carbon in leaves causing greater Rubisco activity and higher rates of photosynthesis. Greater photosynthesis increases the content of non-structural carbohydrates in leaves which can lead to greater starch reserves and increased auxin biosynthesis.
Why does increasing light intensity increase photosynthesis?
Light intensity – Increasing light intensity increases the rate of photosynthesis because more energy is provided. However, if the light intensity is increased above a certain threshold, the rate of photosynthesis will not increase because another factor (such as temperature) is limiting the rate of the reaction.
Why does higher light intensity affect photosynthesis?
As you rise from low light intensity to higher light intensity, the rate of photosynthesis will increase because there is more light available to drive the reactions of photosynthesis.
What are the ideal conditions for photosynthesis?
A plant is provided with ideal conditions for photosynthesis when it has an adequate supply of water, carbon dioxide and sunlight – but like most things in life, it is possible for plants to have too much of a good thing, such as sunlight.
What is a high CO2 level?
Results are given in millimoles per liter (mmol/L) or milliequivalents per liter (mEq/L). Normal values in adults are 22 to 29 mmol/L or 22 to 29 mEq/L. Higher levels of carbon dioxide may mean you have: Metabolic alkalosis, or too much bicarbonate in your blood.
How does increased CO2 affect photosynthesis?
Elevated (CO2) increases the availability of carbon in leaves causing greater Rubisco activity and higher rates of photosynthesis.
Why is CO2 a limiting factor of photosynthesis?
Another limiting factor is carbon dioxide concentration. Carbon dioxide and water are what the plant converts into glucose, and so without enough carbon dioxide, the process cannot occur. As levels of carbon dioxide increase, the rates of photosynthesis also increase.
Why does light intensity affect the rate of photosynthesis?
As you rise from low light intensity to higher light intensity, the rate of photosynthesis will increase because there is more light available to drive the reactions of photosynthesis.
Does more CO2 increase the rate of photosynthesis?
Elevated (CO2) increases the availability of carbon in leaves causing greater Rubisco activity and higher rates of photosynthesis. Greater photosynthesis increases the content of non-structural carbohydrates in leaves which can lead to greater starch reserves and increased auxin biosynthesis.
Why does light intensity increase the rate of photosynthesis?
Light intensity – Increasing light intensity increases the rate of photosynthesis because more energy is provided. However, if the light intensity is increased above a certain threshold, the rate of photosynthesis will not increase because another factor (such as temperature) is limiting the rate of the reaction.
How does light CO2 and temperature affect photosynthesis?
Plants take in carbon dioxide from the air. But, since the amount of CO2 in the air is very less, it acts as a limiting factor for photosynthesis. It is seen that, when light and temperature are not the limiting factors, increasing CO2 concentration leads to an increase in the rate of photosynthesis.
Why would it be hard to find the ideal CO2 level If the light intensity were very low?
It would be difficult to find the ideal CO2 level with a low light intensity because the plant will have a difficult time trying to survive. It would be very hard considering with no light there's no reaction.
What is the role of carbon dioxide CO2 in photosynthesis?
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
What is a safe CO2 level?
OSHA has established a Permissible Exposure Limit (PEL) for CO2 of 5,000 parts per million (ppm) (0.5% CO2 in air) averaged over an 8-hour work day (time-weighted average orTWA.)
What level should your CO2 be?
The normal range is 23 to 29 milliequivalents per liter (mEq/L) or 23 to 29 millimoles per liter (mmol/L).
What is the optimal level of CO2 in the atmosphere?
Knowing this, Selin says, one could make the case that 20th-century levels of CO2 are ideal, and that humanity ought to aim for the atmospheric levels of a few decades ago, somewhere between 300 and 350 ppm.
What is the optimum CO2 level do you think will maximize the rate of photosynthesis Why?
In the Gizmo, what light intensity and CO2 level do you think will maximize the rate of photosynthesis? The highest light intensity and CO2 level will maximize the rate of photosynthesis.
How does CO2 level affect oxygen production in photosynthesis?
Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
What is the minimum level of CO2 for plant growth?
Abstract. MANY reports1–5 indicate that plants in a closed system will reduce the concentration of carbon dioxide in the air to a minimum value between 50 and 100 p.p.m. Gabrielsen2 postulates “there exists a threshold value for carbon dioxide in photosynthesis, which for elder leaves is about 0.0090 volume per cent.
What CO2 level is too low?
A normal result is between 23 and 29 mmol/L for adults but may vary by lab. A low CO2 level can be a sign of several conditions, including: Kidney disease. Diabetic ketoacidosis, which happens when your body's blood acid level goes up because it doesn't have enough insulin to digest sugars.
What happens if CO2 levels are too low?
Too little CO2 in the blood may indicate: Addison's disease, another disorder of the adrenal glands. In Addison's disease, the glands don't produce enough of certain types of hormones, including cortisol. The condition can cause a variety of symptoms, including weakness, dizziness, weight loss, and dehydration.
What does high CO2 level mean?
When your blood has too much CO2, it means the body is not properly removing it (hypercapnia). Higher-than-normal CO2 levels in the blood could point to a health problem such as: Respiratory or metabolic alkalosis. Cushing's syndrome. Hormonal disorders.