Do all plants give out oxygen?

Answer 1

Yes, like all multicellular organisms, plants use oxygen in order to fully oxidize (and thus fully extract the energy from) organic food molecules. Plants themselves don't actually take in oxygen, they get it from the CO2 that they break down. During the growing season, in the daytime, plants also photosynthesize. This is a process in which plants reduce CO2 into organic molecules (which are used to make plant tissues or stored for later energy use). During this process plants produce O2. When photosynthesizing, plants often make more O2 than they use, but they are still using O2.

Contrary to popular belief, the oxygen really comes from water taken in by the plant. Most people think this comes from the carbon dioxide that the plant "breathes" in. Up until the 19th century, many scientist thought the same thing; that plants breathes in CO2 and out O2. In 1930, C.B. van Niel proved this was false in an experiment which used heavy oxygen (18O) in CO2, instead of normal oxygen. When the oxygen was given off, it wasn't heavy oxygen, it was normal, thus concluding that oxygen exhaled by plants comes from water, not carbon dioxide. Plants are a very important part in or life. Without them we couldn't be alive.

Yes, plants do use oxygen but this is a very small amount! After they have taken in carbon dioxide and have produced oxygen as a by product, they use a small amount of this oxygen for their own respiration

the equation for photosynthesis is 6h2o+6co2--> c6h12o6

The Os in this equation represent the oxygen atoms. so just by looking at the equation you could tell that plants use oxygen.

Answer 2

Yes, Oxygen is a product of the process of photosynthesis.

The photosynthesis reaction put simply is:

Carbon Dioxide + Water ---> Glucose + OXYGEN

6CO2 + 6H20 ---> C6H12O6 + 602

Answer 3

Yes, plants do give off oxygen. They do this during the process of photosynthesis in which they use energy from the sun and nutrients from the soil to convert it into sugar as a form of energy for the plant.

Answer 4

Yes. They take CO2 (Carbon dioxide) in the air, along with water, and convert it into glucose ( a type of sugar that is energy for many organisms), and oxygen. Here is the actual formula for photosythesis:

6CO2 + 6H2O + Energy ® C6H12O6 + 6O2

six carbon dioxide plus six waters plus energy makes six glucose and six oxygen.

However, they use that oxygen to create energy through cellular respiration, so no not really.

that was NOT my question. i typed in WHEN ARE Plants MOST likely to give off greater amounts of oxygen?

Answer 5

Yes.

The definition of a plant is something that photosynthesises - ie it makes its own food from the carbon dioxide in the air, and water in the ground, using the green matter in its leaves called chlorophyll to enable this to happen. The by-products of photosynthesis are sugars (the plant's food) and oxygen, which is passed into the air.

Therefore all plants are green by definition, or, if their leaves are variegated (of several colours) still have some green chlorophyll in them.

Some people think that mushrooms or sea anemones are plants. However, neither has chlorophyll in them so they cannot be plants. Mushrooms are a group by themselves (fungi) and sea anemones are primitive animals.

Answer 6

If the plant does photosynthesis, it gives off oxygen as a byproduct and since all plants use photosynthesis to get food, the answer is yes, all plants give off oxygen.

Answer 7

Yes, oxygen is a by-product of the light reactions. It must be disposed of because it is a competitive inhibitor on RuBisCO.

Answer 8

After plants take in CO2, water, and sunlight through a process called photosynthesis, the plant creates glucose, and oxygen is released as a bi-product.

Answer 9

yes