What is the compensation point in photosynthesis?
Compensation Point for Light (of photosynthetic plants) is the intensity of light at which the rate of carbon dioxide uptake (photosynthesis) is exactly balanced by the rate of carbon dioxide production (respiration) or equivalently, the light intensity at which the rate of oxygen production is exactly balanced by the …
What is the CO2 − compensation point γ?
The CO2 compensation point: In a closed atmosphere, plants in the light will reduce the CO2 concentration of that atmosphere until the CO2 compensation concentration or compensation point (Γ) is reached. Consequently there is a net loss of CO2 from the atmosphere to the leaves during the hours of daylight.
What is the level of CO2 fixation at the light compensation point?
At this point, the uptake of CO2 through photosynthetic pathways is equal to the respiratory release of carbon dioxide, and the uptake of O2 by respiration is equal to the photosynthetic release of oxygen. In assimilation terms, at the compensation point, the net carbon dioxide assimilation is zero.
What is the light saturation point in photosynthesis?
More light generally equates to higher levels of photosynthesis. However as the light intensity increases, the photosynthetic rate eventually reaches a maximum point. This point where the light intensity does not increase the photosynthesis rate is called the light saturation point.
What is light compensation level?
compensation level The depth at which light penetration in aquatic ecosystems is so reduced that oxygen production by photosynthesis just balances oxygen consumption by respiration. Generally this implies a light intensity of about 1 per cent of full daylight. A Dictionary of Ecology.
What does high light compensation point mean?
The compensation point is where light intensity is at the point where the rate of photosynthesis is equal to the rate of respiration. At light intensities below this point, more respiration occurs. At higher light intensities, more photosynthesis occurs.
What is compensation point Class 10?
Class 10th. Answer : The compensation point is the amount of light on the light curve where the rate of photosynthesis exactly matches the rate of respiration.
What is CO2 saturation point?
The saturation point of carbon dioxide in C4. C. 460μl/L. D.
What is compensation point in science?
compensation point The point reached in a plant when the rate of photosynthesis is equal to the rate of respiration. This means that the carbon dioxide released from respiration is equivalent to that which is taken up during photosynthesis. The compensation point is reached as light intensity increases.
What is the compensation point of photosynthesis?
For instance, in the early morning and late evenings, the compensation point may be reached as photosynthetic activity decreases and respiration increases. Therefore, the partial pressure of CO 2 at the compensation point, also known as gamma, is a function of irradiation.
What is the light compensation point of the light curve?
The (light) compensation point is the light intensity on the light curve where the rate of photosynthesis exactly matches the rate of cellular respiration.
How does light intensity affect the rate of photosynthesis?
The number of photons that a plant absorbs via its chloroplasts directly influences the rate of photosynthesis in the plant. As light intensity, also known as Photosynthetic Photon Flux Density (PPFD) in the world of horticulture, increases, so does the rate of photosynthesis, up until a certain point called the saturation point.
What happens when the rate of photosynthesis and respiration equal?
When the rate of photosynthesis equals the rate of respiration or photorespiration, the compensation point occurs. At the compensation point, the rate of photosynthesis is equal to the rate of respiration.