What is a technique for measuring photosynthetic rate?
This method has following steps:
- A plant is placed in darkness. Cuttings from its leaves are taken. They are cut into discs of uniform sizes. These discs are then heated in oven. ...
- Another plant is illuminated in light. Its leaves are taken. These leaves are divided into discs. Their dry weight is determined.
- Dry weight of both the leaves is estimated.
What is the highest rate of photosynthesis?
The fastest known rates of photosynthesis occur in microalgae, which makes a lot of sense because many species of algae are barely more than giant chloroplasts with flagella (e.g. Chlamydomonas reinhardtii ). Originally Answered: Which particular plant has the highest rate of photosynthesis?
How does magnesium reduce the rate of photosynthesis?
The first observable signs of both magnesium starvation and overexposure in plants is a decrease in the rate of photosynthesis. This is due to the central position of the Mg 2+ ion in the chlorophyll molecule. The later effects of magnesium deficiency on plants are a significant reduction in growth and reproductive viability.
How does oxygen production relate to the rate of photosynthesis?
While water is split down to form oxygen through photosynthesis, in cellular respiration oxygen is mixed with hydrogen to form water. The oxygen production compares to the rate of photosynthesis because there is a greater flow of oxygen when it narrates to photosynthesis at a great rate.
How do you measure the rate of photosynthesis experiment?
1:566:55How We Measure Photosynthesis - YouTubeYouTubeStart of suggested clipEnd of suggested clipWell one way to measure photosynthesis is to measure how much co2 plant leaves absorb. Because weMoreWell one way to measure photosynthesis is to measure how much co2 plant leaves absorb. Because we know that a plant that is actively absorbing co2 is also performing photosynthesis.
What could be used to measure the rate of photosynthesis in a plant?
Dear, you can use IRGA (CI-340) or licor for photosynthesis measurement.
What are three ways you can measure the rate of photosynthesis?
Directly: by the production of oxygen(counting bubbles) or the uptake of carbon dioxide (measuring pH of surroundings). Indirectly by an increase in biomass.
What are two ways the rate of photosynthesis can be measured?
3.8. 7 Explain that the rate of photosynthesis can be measured directly by the production of oxygen or the uptake of carbon dioxide, or indirectly by an increase in biomass.
Which could be used to monitor the rate of photosynthesis in a plant quizlet?
The rate of photosynthesis can therefore be measured by: Depletion of substrate which includes measuring how much carbon dioxide has been used or how much water is used. In this simple experiment the accumulation of oxygen is measure of rate of reaction.
How do you measure the rate of photosynthesis in pondweed?
Position the boiling tube so that the pondweed is 10 cm away from the light source. Allow the boiling tube to stand for five minutes. Count the number of bubbles emerging from the cut end of the stems in one minute. Repeat the count five times and record your results.
How to measure photosynthesis?
One of the simplest measures of photosynthesis is just measuring how much your plants grow (i.e. , weigh them). Of course this technique is imperfect because of other influences on growth, the amount of time you have to wait to get a measurable change, and ideally you would want to use the dry mass of your plants to avoid water content differences, but you have opted to exclude the methods that get around those problems.
Why do plants use dry weight?
If you dry the plant and use dry weight, that's how they measure photosynthesis, because all the carbon found in the plant is a balance of respiration at night and over-compensating photosynthesis in the day .
Can photosynthesis be quantified?
Furthermore, I should note that it is almost impossible to quantify photosynthesis by measuring gas emissions in this scenario. The only way to keep the plants in a stable environment with equipment that I can afford is in an open, climate controlled room, (as opposed to a closed testing chamber that could trap gasses).
What is a balanced equation for photosynthesis?
The equation for photosynthesis states that the combination of carbon dioxide, water and light energy produces a carbohydrate (glucose) and oxygen. The chemical formula is 6CO2 + 6H2O + light energy = C6H12O6 + 6O2.
Why the green light did not help the plant to grow?
Your question is a very good one because plants absorb light at very specific wavelengths to obtain energy. In particular, chlorophyll absorbs blue and red light while allowing green light to be reflected (or transmitted). This is why plants appear to be green to us.
What is the rate of photosynthesis?
The main factors affecting rate of photosynthesis are light intensity, carbon dioxide concentration and temperature.
What are the substances used in photosynthesis?
During this reaction, carbon dioxide and water are converted into glucose and oxygen. The reaction requires light energy, which is absorbed by a green substance called chlorophyll. Photosynthesis takes place in leaf cells. These contain chloroplasts, which are tiny objects containing chlorophyll.
Which type of energy transformation occurs in photosynthesis?
Plants need only light energy, CO2, and H2O to make sugar. The process of photosynthesis takes place in the chloroplasts, specifically using chlorophyll, the green pigment involved in photosynthesis. During photosynthesis light energy is converted into chemical energy.
How does the wavelength of light affect the rate of photosynthesis?
When certain wavelengths are reflected, color is produced. In chloroplasts, the main pigment present is chlorophyll a. The rate of photosynthesis is affected by the different wavelengths of light a plant is exposed to because different pigments in chloroplasts absorb different wavelengths for use in photosynthesis.
Why light is necessary for photosynthesis?
The process of photosynthesis occurs when green plants use the energy of light to convert carbon dioxide (CO2) and water (H2O) into carbohydrates. Light energy is absorbed by chlorophyll, a photosynthetic pigment of the plant, while air containing carbon dioxide and oxygen enters the plant through the leaf stomata.
Why is photosynthesis important?
Worksheet Overview. What is photosynthesis and why is it so important to us? The energy from all the food we eat can be traced back to the Sun. This is because plants absorb the Sun's energy and transfer it into glucose (food) during photosynthesis.
What gas does a plant take in during photosynthesis?
In summary, plants take in carbon dioxide gas and water, and then produce glucose and oxygen gas during photosynthesis.
Why isn't my pondweed doing photosynthesis?
The pondweed might not start the process of photosynthesis straightaway, as it needs time to adjust to the new light intensity. This could be a problem if you are only relying on the counting bubbles method. Wait a couple of minutes before you start the timer or begin counting the bubbles in order to solve this.
How many times can you repeat an experiment?
Good scientists will always repeat an experiment at least three times and take the mean average (adding up each value and then dividing the total by the number of values there are) as this gives more accurate results. For example at 80 cm, you may have counted 22 bubbles, 17 bubbles and then 24 bubbles.
How to keep carbon dioxide constant in water?
You can overcome this by adding sodium hydrogen carbonate to the water in the beaker, as this will keep the level of carbon dioxide constant (the same).
Does a lamp increase the rate of photosynthesis?
Heat given off by the lamp could raise the temperature of the water - temperature is another factor, as well as light intensity, that affects the rate of photosynthesis. This could artificially increase the rate of photosynthesis meaning that the experiment would not be as accurate. It is best to use a lamp with an LED bulb, as this gives off hardly any heat.
