What light intensity and CO2 level is best for photosynthesis?

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.

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 is the best light intensity 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 affect CO2 in photosynthesis?

As the light intensity increases the rate of photosynthesis follows (point B on the graph). This means more carbon dioxide is being absorbed by the plant for photosynthesis. So this means more carbon dioxide uptake occurs. The graph shows this increase in carbon dioxide uptake.

GCSE Science Revision Biology "Required Practical 6: Photosynthesis"

Why does high light intensity increase 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 light intensity is best for plant growth?

Footcandles measure lumens over a square foot. Each lumen that falls on a leaf will increase photosynthesis. Plants adapted to direct sunlight require about 11,000 lux or 1,100 footcandles. Low-light plants will tolerate with less than 2,500 lux or 250 footcandles.

Does light intensity affect photosynthesis?

Light intensity

Without enough light, a plant cannot photosynthesise very quickly - even if there is plenty of water and carbon dioxide and a suitable temperature. Increasing the light intensity increases the rate of photosynthesis, until some other factor - a limiting factor - becomes in short supply.

Does increasing CO2 increase photosynthesis?

Studies have shown that increased concentrations of carbon dioxide increase photosynthesis, spurring plant growth. While rising carbon dioxide concentrations in the air can be beneficial for plants, it is also the chief culprit of climate change.

Why does CO2 limit the rate of photosynthesis?

As carbon dioxide concentrations increase, so too does the rate of photosynthesis until a certain point where the graph levels off. At lower carbon dioxide concentrations carbon dioxide is the limiting factor because an increase in carbon dioxide causes an increase in photosynthesis.

Are high CO2 levels good for plants?

Higher concentrations of carbon dioxide make plants more productive because photosynthesis relies on using the sun's energy to synthesise sugar out of carbon dioxide and water. Plants and ecosystems use the sugar both as an energy source and as the basic building block for growth.

How does increased CO2 affect plant growth?

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.

Is 6000K good for plants?

The 50W , 6000K LED lights provides full spectrum light that's optimal for plant growth.

Is 6500K good for plants?

Foliage growth is generally best around 6500K, though many plants need a period of warmer light, around 3000K, in order to produce flowers, and thus fruit. In other words, if your goal is to simply produce seedlings, leafy green vegetables, or root crops, you only need higher spectrum bulbs.

What is 5000K light good for?

A 5000K LED bulb produces a bright daylight kind of color. So, it's good for bathrooms, basements area and your study room. You can even use it in the kitchen when you work. A 4000K LED bulb produces a bright white or cool toned kind of color which gives a warm effect as well as bright enough to work beneath it.

How much CO2 is used in photosynthesis?

The carbon dioxide level may drop to 150 to 200 parts per million during the day in a sealed greenhouse, because CO ₂ is utilized by plants for photosynthesis during daytime. Exposure of plants to lower levels of CO ₂ even for a short period can reduce rate of photosynthesis and plant growth.

What does too much CO2 do to plants?

High CO2 levels cause plants to thicken their leaves, which could worsen climate change effects, researchers say. Plant scientists have observed that when levels of carbon dioxide in the atmosphere rise, most plants do something unusual: They thicken their leaves.

What is the minimum level of CO2 for plant growth?

The amount of CO2 in the atmosphere was reduced by about 90% during the last 150 million years. If this trend continues CO2 will inevitably fall to levels that threaten the survival of plants, which require a minimum of 150 ppm to survive.

How does light intensity and distance affect the rate of photosynthesis?

As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. This indicates that the rate of photosynthesis increases with light intensity.

What happens if light intensity is too high?

When you increase the level of light, plants will photosynthesize more. But, if you have too much light, than the other 2 ingredients become limiting and photosynthesis can no longer increase with the level of light. When this occurs, leaves can experience sunburn damage.

How does low light intensity affect photosynthesis?

Low light was shown to substantially affect the agronomic traits of plants and inhibit physiological metabolic processes, including photosynthesis and antioxidant characteristics, as well as carbon and nitrogen fixation [3–6]. It causes slow growth, decrease of leaf weight and flower bud number.

How much CO2 should I give my plants?

Experts disagree about the optimum level of CO2 for plant growth. You can find arguments for 800ppm, 1,000ppm, 1,200ppm and 1,500ppm. We recommend starting at 1,000ppm, then adjusting your CO2 levels over time with experience. CO2 levels below 400ppm and above 1,500ppm will reduce plant growth.

Do you use CO2 during flowering?

CO2 During Flowering

When adding CO2 to your grow room, the flowering stage is the most important. Adding CO2 to your grow room, especially in the first 2-3 weeks of flowering, can kick start flower production and boost flower size significantly.

Does CO2 work with LED grow lights?

For grow rooms with CO2 supplementation, we recommend 88 °F / 31 °C as the ideal ambient air temperature while the lights are on. For the lights-off night period, our lights are not influencing the temperature of the plants at all, so you want to keep the same night temperature you would run with HPS or other lights.