How light intensity affects the rate of photosynthesis lab report?
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. However, at sufficiently high levels of light intensity, the rate oxygen evolution remains constant.
How does light intensity affect photosynthesis investigation?
The effect of light intensity on photosynthesis can be investigated in water plants. Use Cabomba or Elodea, which are sold in aquarium shops. The plants will release bubbles of oxygen – a product of photosynthesis – which can be counted.
How does light color affect photosynthesis?
The lights higher on the light spectrum, like blue, would have the fastest rate of photosynthesis because the energy is the highest. The green light would have the slowest rate because the chlorophyll inside of the leaves reflects green light, so it would not be absorbed as much as the other colors.
Why is light intensity important for 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.
How does light wavelength affect photosynthesis?
Special pigments in chloroplasts of plant cells absorb the energy of certain wavelengths of light, causing a molecular chain reaction known as the light-dependent reactions of photosynthesis. The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm).
How does light intensity affect the Calvin cycle?
The more light there is, the more photosystems in the thylakoid membrane can be activated. Once there is a sufficient intensity of light, the ATP and NADPH that come from the light reactions will be in abundance. For the remaining part of photosynthesis to occur (the Calvin cycle), carbon dioxide is needed.
Which light has the least affect on photosynthesis?
Though green light has the least benefit to plants, red and blue light can have different but complementary effects on plant growth. The Arizona Master Gardener Manual, which was produced by the Cooperative Extension of the University of Arizona’s College of Agriculture, discusses some of the effects.
How does the level of light affect the rate of photosynthesis?
As the light intensity increases, the rate of photosynthesis increases. However, the rate will not increase beyond a certain level of light intensity. At high light intensities the rate becomes constant, even with further increases in light intensity, there are no increases in the rate.
What are the factors affecting the intensity of light?
External factors: Light. Three characteristics of light (i) intensity (quantity). Temperature. Temperature in the range of 10-35 °C is optimum for photosynthesis. Carbon dioxide. Increase in carbon dioxide increases the rate of photosynthesis in most C3 plants. Oxygen. C3 plants show optimum photosynthesis at low oxygen concentration. Water.
What wavelength of light is most effective for photosynthesis?
Photosynthesis is most efficient at light wavelengths between 400 and 500 nanometers and 600 to 700 nanometers. The green pigment, chlorophyll, restricts the efficiency of photosynthesis. Visible light falls between 400 and 700 nanometers.