What wavelength of light in the figure is most effective in driving photosynthesis group of answer choices?
An action spectrum plots the rate of photosynthesis at various wavelengths of visible light, and it shows that blue light with a wavelength of about 490 nm is effective in driving photosynthesis.
Which wavelengths of light are the most effective in 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.
What color is not absorbed by this pigment?
As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants.
What Colour light is best for photosynthesis?
green light
What colors of light are most effective for photosynthesis and why?
Red light is more effective in photosynthesis because both the photosystems (PS I and PS II) absorb light of wavelengths in the red region (680 and 700 nm, respectively). Furthermore, blue light is absorbed by carotenoids, which pass the energy to the chlorophyll.
Is white light best for photosynthesis?
White light is actually made by combining other colors on the spectrum such as red, green, and blue. Therefore white light will actually be much more beneficial for the photosynthesis process than yellow light.
Why does blue light increase the rate of photosynthesis?
The proteins of chloroplast sub-compartments under blue LEDs at high light intensity optimize photosynthesis and provide an advantage for higher growth and development of plants than those grown under red and green LEDs at low light intensities.
Why do plants absorb red and blue light the best?
Red and yellow light is longer wavelength, lower energy light, while the blue light is higher energy. That makes it impossible to assign a single wavelength of best absorption for all plants. All plants, however, has chlorophyll a, which absorbs most strongly at ~450 nm, or a bright blue color.
What is the effect of blue light on photosynthesis?
BLUE LIGHT AND PLANT GROWTH In addition, blue light regulates the opening of stomata, which are the tiny openings on leaves that control both water loss and the uptake of carbon dioxide. Generally, only a low intensity of blue is needed in a light spectrum for fully functional photosynthesis.
Why does light increase 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. At a very high intensity of light, the rate of photosynthesis would drop quickly as the light starts to damage the plant.
Is oxygen a limiting factor in photosynthesis?
Photosynthesis is the process by which plants absorb sunlight and use it to transform carbon dioxide and water into glucose and oxygen. The major limiting factors in this process are light intensity, temperature, and carbon dioxide levels. If the carbon dioxide level is too low, the rate will also decline.
What are the factors that affect the rate of photosynthesis?
Three factors can limit the rate of photosynthesis: light intensity, carbon dioxide concentration and temperature.
- Light intensity. Without enough light, a plant cannot photosynthesise very quickly – even if there is plenty of water and carbon dioxide.
- Carbon dioxide concentration.
- Temperature.
What are five factors that affect the rate of photosynthesis?
Several factors can affect the rate of photosynthesis: light intensity. temperature….Factors affecting photosynthesis
- the rate of oxygen output.
- the rate of carbon dioxide uptake.
- the rate of carbohydrate (glucose) production.
What is the most important limiting factor in photosynthesis?
Light intensity is limiting the rate of photosynthesis at light intensities of 0 to 3.75 units. As light intensity is increased the rate of photosynthesis increases. At light intensities of 3.75 to 5.5, a carbon dioxide concentration of 0.03 per cent is insufficient and limits the rate of photosynthesis.
What is the process that can reduce the rate of photosynthesis?
There are several limiting factors which can reduce the rate of photosynthesis , eg temperature, light intensity and carbon dioxide concentration.
How does the distance of a light source affect the release of oxygen concentration?
The relationship between the rate of photosynthesis and distance between light source and plant is inversely proportional with distance of light source, as shown in the Graph 1. According to the Analysis it can be said that the oxygen bubbles less in 50 cm which means that the light intensity is less in 50 cm.
What factors speed up or slow down the rate of photosynthesis?
The environmental factors that speed up or slow down the rate of photosynthesis are temperature and the availability of sunlight and carbon dioxide. …
How does temperature affect photosynthesis and cellular respiration?
A change in temperature affects the- rate of cellular respiration significantly. An increase in temperature results in the absorption of heat, thus making the reaction endothermic. When the temperature is decreased, the molecular energy of the reactants is decreased. Thus, fewer collisions are observed.
How light intensity affects the rate of photosynthesis experiment?
More oxygen bubbles are produced when the light is closer to the beaker. So a greater light intensity gives a greater rate of photosynthesis.
Why is the apparatus left for 15 minutes?
Apparatus X (shown in the diagram below) was used to measure the rate of water loss from the leaves at several light intensities. At each light intensity, the apparatus was left for 15 minutes before starting measurements.
How light intensity affects plant growth experiment?
Medium light plants can grow in the 15-watt range, but higher intensities of light can promote faster growth rates. High light plants require at least 20 watts per square foot of growing space, though higher intensities will further promote growth and flowering.
How do you vary light intensity in an experiment?
the light intensity is proportional to distance – it will decrease as the distance away from the bulb increases – so light intensity for the investigation can be varied by changing the distance from the lamp to the plant.
Why does light intensity affect oxygen production?
As the light levels are increased there is an increase in oxygen (bubble) production from photosynthesis of the plant. This increase slows down progressively at higher light levels.