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Oxygen is a necessary element to all forms of life.
Dissolved oxygen analysis measures the amount of oxygen (O2) dissolved in an aqueous solution. Oxygen enters water from the surrounding air and as a by product of photosynthesis. Testing with portable oxygen meters determines whether or not you have optimal dissolved oxygen levels necessary for good water quality. For accurate results this test should be performed on site. Our handheld type advance microprocessor based, fast and accurate DO/O2 meter is ideal for such applications.
Indeed, Finelli et al. (2006) discuss the link between coral tissue thickness and damage by 'harmful levels of oxygen.' Their discussion concerned water motion and photosynthesis - that will be our topic for next time, along with synergistic effect of bicarbonate.
Sunlight is necessary for photosynthesis to occur
Trees are building blocks of life on earth. Through photosynthesis, the process of converting light to energy, they convert carbon waste in the atmosphere into necessary oxygen. They provide habitat for animals and insects. They improve and hold together soils. They grow fruit and nuts not only delicious to us but to wildlife. They provide shade and shelter on hot summer days. Over the millennia, their wood has provided humans with homes, boats, furniture and warmth. Some trees live and grow thousands of years – imagine who and what they have shaded throughout history.
Oxygen, the “elixir of life,” was discovered by Joseph Priestly and Carl Wilhem Scheele independently of each other in the 1770’s. Oxygen is critical for life on Earth, produced by plants during photosynthesis and necessary for aerobic respiration in animals. Accounting for one fifth of the earth’s atmosphere, oxygen combines with most elements and is a component of thousands of organic compounds. Oxygen is colorless, odorless and tasteless in its gaseous form, and condenses to pale blue liquid and solid forms. Oxygen is a highly reactive element that promotes rapid combustion and is often used in industrial application.
Experiment to Show That Light Is Necessary For Photosynthesis
While oxygen is necessary for the process of respiration, glucose plays a crucial role in the diet; and that explains why the photosynthesis is important for all the lifeforms on the planet - including humans.
hotosynthesis is the link between inorganic and organic worlds, and the importance of contributions made by zooxanthellae in maintaining health of photosynthetic corals is well known. We also know that rates of photosynthesis are dependent upon the amount of light, its spectral quality, as well as a supply of nutrients (for terrestrial plants, 'nutrient' is generally defined as nitrogen, potassium and phosphorus with 'micronutrients' described as iron, copper, and a host of others.) Though not listed as such, inorganic carbon (in the form of carbon dioxide) is an important nutrient in that it is necessary for plant growth and production of simple sugar. In marine aquaria, nutrients such as nitrogen and phosphorus are usually in such supply that means of removing them are often necessary. Potassium, with a concentration of about 400 mg/L, is also in good supply, and micronutrients might be added or replenished through feeding or water changes. But what of carbon? While it is true that some carbon dioxide may be present in an aquarium, and corals' respired CO2 can meet some of photosynthesis' carbon demand, some of the carbon used by at least some zooxanthellae will be provided by bicarbonate dissolved in the aquarium water.
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Oxygen is a chemical element with symbol O and atomic number 8
Sugar Maples, like all plants, are photoautotrophs, meaning they produce their own food from sunlight, carbon dioxide, and water in a process called photosynthesis. By this process, plants can then produce oxygen and organic compounds (mostly sugars). Not only can the plant produce food necessary for it to survive, but it also produces vital oxygen necessary for humans and many other organisms to survive. For a Sugar Maple tree, as for most plants, the leaves are the sites of photosynthesis.
How to Show Oxygen Is a By Product of Photosynthesis
But how does everything get there? Water and minerals first enter the plant through its root system and is then transferred up the plant via specialized vascular tissue called xylem. Eventually the water reaches the leaves where it can then be used in photosynthesis. The leaves also contain special openings called stomata that allow carbon dioxide to enter the cells to be used in photosynthesis and for oxygen to leave into the environment.
NOVA - Official Website | Illuminating Photosynthesis
More than 10 billion tons ofcarbons are "fixed" by plants on Earth every year- this means that carbon molecules are convertedfrom being part of a simple gas (carbon dioxide)into more complex molecules (carbohydrates),making carbon available as food fornon-photosynthesizers, like humans. They alsoproduce oxygen at the same time. Take a look at atree - most of the mass of that tree was made bythis process of pulling the carbon out of the gasform and into the sugar form. Amazing!
Photosynthesis dictionary definition | photosynthesis …
Sunlight provides energy in the form ofelectromagnetic radiation. Sunlight is actuallymade up of photons, which are very small particlesthat carry electromagnetic force. In the firststep of photosynthesis, the plants capture aphoton and harness its energy in order to startphotosynthesis. During photosynthesis, the plantstake carbon dioxide (which is present throughoutthe air) and water (which is also in the air anddirt) and turn it into sugar, among othercompounds. Plants also produce oxygen duringphotosynthesis. (This is a lucky process for usbecause we produce carbon dioxide and breathe inoxygen -- without plants, we'd be in a lot oftrouble!)Amazingly, some animals have beenfound that also do photosynthesis. I recentlywrote an article on such an animal -- here is thelink if you're interested (it also talks moreabout photosynthesis):
Respiration dictionary definition | respiration defined
Sunlight provides energy in the form ofelectromagnetic radiation. Sunlight is actuallymade up of photons, which are very small particlesthat carry electromagnetic force. In the firststep of photosynthesis, the plants capture aphoton and harness its energy in order to startphotosynthesis. During photosynthesis, the plantstake carbon dioxide (which is present throughoutthe air) and water (which is also in the air anddirt) and turn it into sugar, among othercompounds. Plants also produce oxygen duringphotosynthesis. (This is a lucky process for usbecause we produce carbon dioxide and breathe inoxygen -- without plants, we'd be in a lot oftrouble!)
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