blue and red.
The rate of photosynthesis can be accurately determined in a controlled experiment by measuring the amount of oxygen produced by the plant over a specific time period. This can be done using a device called a gas exchange analyzer, which can track the changes in oxygen levels in a closed system where only the plant is present. By monitoring the increase in oxygen concentration, scientists can calculate the rate of photosynthesis occurring in the plant.
One simple photosynthesis experiment is to place a small plant in a clear plastic bag with a small amount of water and seal it. Place the bag in sunlight for a few hours. The plant will release oxygen during photosynthesis, which can be observed as bubbles forming in the water. This demonstrates how plants use sunlight to produce oxygen.
The bubbles produced by pondweed during photosynthesis underwater contain oxygen gas. This is a byproduct of the process and indicates that photosynthesis is occurring. If the experiment permits the bubbles to escape, they can be collected and tested to confirm the presence of oxygen.
Plants cannot make photosynnthesis it is the process of making food. But a plant could make food with torchlight as long as it has soil and the nutrients it needs to survive aswell. It may not grow properly though. Why don't you try an experiment to conclude I am right.
One way to measure photosynthesis at home is by using a simple experiment with a plant, water, and a light source. By measuring the amount of oxygen produced by the plant during photosynthesis, you can indirectly measure the rate of photosynthesis. This can be done by collecting the oxygen bubbles released by the plant in a container and measuring the volume of gas produced over a period of time.
If this experiment is performed, the researchers should carefully design and carry out the experiment to test the hypothesis. They would need to control variables such as light intensity, temperature, and carbon dioxide levels while measuring the rate of photosynthesis in plants exposed to varying wavelengths of light. The data collected would then be analyzed to determine if there is a significant impact of shorter wavelengths of light on the rate of photosynthesis.
The rate of photosynthesis can be accurately determined in a controlled experiment by measuring the amount of oxygen produced by the plant over a specific time period. This can be done using a device called a gas exchange analyzer, which can track the changes in oxygen levels in a closed system where only the plant is present. By monitoring the increase in oxygen concentration, scientists can calculate the rate of photosynthesis occurring in the plant.
Engelmann shone light of different colores (wavelengths) onto filaments of Spirogyra. Spirogyra is an alga made up of filaments (chains) of cells. He added motile bacteria (which could swim) and which needed oxygen and observed where they went. He found that the bacteria clustered around the blue and red colours of the spectrum, where the Spirogyra were producing the most oxygen. So he concluded that these two colours were the most important for photosynthesis. For an animation of his experiment see: http://www.phschool.com/science/biology_place/biocoach/photosynth/action.html See also: http://en.wikipedia.org/wiki/Theodor_Wilhelm_Engelmann
White sunlight contains all the wavelengths of visible light. Hence photosynthesis will always occur in it. That means it can not tell for contribution or non contribution of a particular wavelength in photosynthesis
In an experiment, a mean needs to be determined if the experiment is quantifiable. The mean usually indicates the variation in the results.
we use a broad source of visible wavelengths from the lamp. These were then filtered to a variety of narrow bands of wavelengths (from placing different filters in the apparatus)
Probability determined as part of an experiment is called experimental probability. Probability determined by analysis of all of the possible and expected outcomes is called theoretical probability.
The independent variable in this experiment is the wavelength of the light. This is because it is being manipulated or changed by the researcher to observe its effects on the rate of photosynthesis in the plant.
The blue and red light in the experiment are significant because they represent different wavelengths of light. Blue light has a shorter wavelength and higher energy, while red light has a longer wavelength and lower energy. By using these specific colors of light, researchers can study how different wavelengths affect the outcomes of the experiment.
The dependent variable in this experiment would be the rate of photosynthesis, as it is the outcome that is being measured and is expected to change based on the manipulation of the independent variable, which is the wavelength of the light.
Flase
a leaf (plant) should be destarched before photosynthesis investigations because the starch already present in the plant may mislead the result . hence if a destarched plant is used for the experiment then the amount of starch present at the time of the experiment will be nil and affter the experiment is compleded the amount of starch present in the leaves woul give the rate of photodynthesis as starch id prepared during photosynthesis