When do plants breath oxygen and when CO2?

Question

When do plants breath oxygen and when CO2?

Answer 1

Using the energy from light, the plant cells tear apart the molecules of carbon dioxide and water, CO2 and H2O. In the second step the plants recombine those seperated Carbon, Oxygen, and Hydrogen atoms into sugar. After making the sugar there are some oxygen atoms left over and that oxygen is released .

The actual formula is 6(CO2) + 6(H2O) (+ light energy) > C6H12O6 + 6(O2).

Photo synthesis takes place in cells called chloroplasts, which contain the chlorophyll.

At night plants actually take in oxygen and give off CO2. That's because they are breaking down that sugar to get energy for growth and combining other elements, minerals, and chemicals for making flowers, fruit, seeds etc. They are doing the same thing in daylight too, but photosynthesis is so efficient that the plant uses up the carbon dioxide as it makes more sugar than it actually needs so there is an excess of oxygen, which is released.

The excess sugar is in the sap and juices of fruit, along with water that is not broken up, and the excess oxygen is released back into the air.

Answer 2

plants breathe CO2 and use it in the food-making process called photosynthesis. Oxygen is the by-product of photosynthesis.

Answer 3

they breath oxygen at night and co2 in the morning until sunset

Answer 4

plants always breathe in Oxygen. (it's called respiration, all living things respire).

They breathe in Co2 to create food in a process called photosynthesis.

Answer 5

AT day time ussually...Plants breathe in CO2 during the process of their food production or photosynthesis [a series of enzyme-catalysed steps for the the conversion of light energy into chemical energy by living organisms. Its initial substrates are carbon dioxide and water; the energy source is light (electromagnetic radiation); and the end-products are oxygen and (energy-containing) carbohydrates, such as sucrose, glucose or starch.]

On the other hand, At nightime, Plants take in Oxygen during the process of Plant respiration [the oxidation of certain substrates by enzymes, leading to a release of carbon dioxide. It can be loosely thought of as the opposite of photosynthesis, though the net release of carbon dioxide in respiration is less than carbon uptake in photosynthesis. Sources of glucose for respiration for plants are starch or directly from photosynthesis.]

**Respiration is an essential life process in plants. It is necessary for the synthesis of essential metabolites including carbohydrates, amino acids and fatty acids, as well as for the transport of minerals and other solutes between cells. It consumes between 25 and 75% of all the carbohydrates produced in photosynthesis at ordinary growth rates. [1]

hope this answered your question

Answer 6

Plants don’t breathe oxygen but they breathe Carbon Dioxide.

Plants produce oxygen for us =]