How can the rate of photosynthesis be increased?
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.
How can we measure the rate of photosynthesis experiment?
The incoming and outgoing CO2 from the leaf chamber is measured by infrared spectroscopy with an infrared gas analyzer. The difference gives us the amount of CO2, from which the rate of photosynthesis can be calculated.
What factors affect the rate of photosynthesis experiment?
1) the variables of light intensity, temperature, carbon dioxide, light quality all influence the rate of photosynthesis.
What are 3 ways to increase the rate of photosynthesis?
The process of photosynthesis requires three things: Light, Carbon dioxide and water. If any one of these things is in short supply, then photosynthesis cannot happen. When you increase the level of light, plants will photosynthesize more.
What happens to the rate of photosynthesis as temperature increases?
Temperature and rate of photosynthesis It approximately doubles for every 10 °C increase in temperature. Above the optimum temperature the rate begins to decrease, as enzymes are denatured, until it stops.
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.
When light intensity increases 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 could you tell whether the rate of photosynthesis has increased or decreased?
The rate of photosynthesis increases as the temperature increases. However, the rate declines after the temperature reaches an optimal level (usually around 35 C). The rate of photosynthesis increases as light intensity increases. However, the rate will not increase beyond a certain level of light intensity.
Why will an increase in carbon dioxide concentration increase the rate of photosynthesis?
If the level of carbon dioxide in the atmosphere increases, more carbon dioxide could enter through a smaller opening of the stomata, so more photosynthesis could occur with a given supply of water.
What happens to the rate of photosynthesis when the carbon dioxide concentration is increased?
Carbon dioxide is used to make sugar in the photosynthesis reaction. The concentration of carbon dioxide in the Earth’s atmosphere varies between 0.03% and 0.04%. An increase in the concentration of carbon dioxide gives an increase in the rate of photosynthesis.
How does an increase in temperature affect the rate of photosynthesis?
The rate of photosynthesis is influenced by temperature. Higher the temperature, greater the rate of photosynthesis. This is because photosynthesis is a chemical reaction and most of the chemical reactions are accelerated with temperature.
Why does white light increase the rate of photosynthesis?
White light is the most effective light for photosynthesis because it provides a wide range of colored lights for various pigments to use. When only a single color is used, red is the most effective color of light.
What is the purpose of this experiment on photosynthesis?
These experiments are designed to supplement the more theoretical elements of photosynthesis since they illustrate the effects of sunlight deprivation on plants, rather than explicitly showing how plants convert sunlight into food.
How do you measure the rate of photosynthesis?
In this experiment the rate of photosynthesis is measured by counting the number of bubbles rising from the cut end of a piece of Elodea or Cabomba. The work could be carried out individually or in groups of up to 3 students (counter, timekeeper and scribe).
How does light intensity affect the rate of photosynthesis?
More photosynthesis occurs at higher light intensities. More bubbles of oxygen should be produced when the light is closer to the pondweed. At lower light intensities, when the light is further away, the rate of photosynthesis reduces and so fewer oxygen bubbles should be observed.
What do a level students need to study photosynthesis?
A student will have prior knowledge as to the equation describing the photosynthetic process as well as having a basic understanding of the scientific method. The lab could be used in a unit on, the scientific method, a photosynthetic unit or in a unit on environmental problems (global climate change and its affect on plants).