The process Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.

Plants produce oxygen as a waste product of making sugar using sunlight, carbon dioxide, and water. If a plant needs energy, but doesn’t have sunlight, then it can burn the sugar that it made back when it had sunlight, and doing so requires oxygen.

Plants are producers. They make their own food, which creates energy for them to grow, reproduce and survive. Being able to make their own food makes them unique; they are the only living things on Earth that can make their own source of food energy.

1) Yes, if you illuminate a plant (I presume you are using an aquatic/water plant) it will produce oxygen. You can put the plant under a funnel and collect the bubbles in an upturned test tube. If the gas is collected fresh, it will relight a glowing splint.

To prove that oxygen is a by-product of photosynthesis, you can set up an experiment with an aquatic plant and capture the gas it emits in response to photosynthesis. You will also set up a control condition where the plant will not be exposed to light, preventing photosynthesis.

Expose the apparatus to the sunlight. After few hours, gas bubbles will form and collect in the test tube. Test the gas in the test tube. A glowing splinter bursts into the flame shows the presence of oxygen.

Oxygen supports combustion so a good method of testing for oxygen is to take a glowing splint and place it in a sample of gas, if it re-ignites the gas is oxygen. This is a simple but effective test for oxygen.

Cornelius van Niel

Oxygen evolution is the process of generating molecular oxygen (O2) by a chemical reaction, usually from water. Oxygen evolution from water is effected by oxygenic photosynthesis, electrolysis of water, and thermal decomposition of various oxides.

Isotopic oxygen (O18) supplied as H2O appears in the O2 released in photosynthesis.

Red light is more effective in photosynthesis because both the photosystems (PS I and PS II) absorb light of wavelengths in the red region (680 and 700 nm, respectively). Furthermore, blue light is absorbed by carotenoids, which pass the energy to the chlorophyll.

The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm).

green light

Red and yellow light is longer wavelength, lower energy light, while the blue light is higher energy. That makes it impossible to assign a single wavelength of best absorption for all plants. All plants, however, has chlorophyll a, which absorbs most strongly at ~450 nm, or a bright blue color.

As far as the rate of photosynthesis is concerned, it is fastest in white light making the rate of photosynthesis maximum. After White, We Have Violet Light Where Photosynthesis Occur To A Higher Extent as It Has The Shortest Wavelength Hence Has The Max Energy.

You can use any LED bulb to grow plants if they are emitting enough light. Plants often also look for warmth to come from the light source and we know LED bulbs do not provide much of that.

Plants that receive plenty of blue light will have strong, healthy stems and leaves. Red light is responsible for making plants flower and produce fruit. It’s also essential to a plant’s early life for seed germination, root growth, and bulb development.

Generally, only a low intensity of blue is needed in a light spectrum for fully functional photosynthesis. Generally, blue light suppresses extension growth; plants grown with blue light are usually shorter and have smaller, thicker and darker green leaves compared to plants grown without blue light (Figure 1).

Yes, they are bright and will probably illuminate your aquarium better than RGB bulb, but in terms of plant growth, they are not as effective. Moonlight blue bulbs are calm and help nocturnal fish feed at night while the rest of your tank inhabitants sleep.

Some research has shown blue light may increase the risk of macular degeneration, a disease of the retina. Research shows blue light exposure may lead to age-related macular degeneration, or AMD. One study found blue light triggered the release of toxic molecules in photoreceptor cells.

Research shows blue light from electronic devices can lead to changes in your skin cells, including cell shrinkage and death. Too much blue light could also lead to pigmentation. One study linked blue light exposure to more swelling, redness, and pigment changes in people with darker skin.

Here are some practical ways to protect your eyes from blue light damage:

1. Limit screen time when you are not working.
2. If you use your devices at night, download a blue light filter app.
3. Try not to use your devices directly before bedtime.
4. Blink, blink, blink.
5. Get regular comprehensive eye exams.