Q:

How do plants produce oxygen during photosynthesis?

A:

Quick Answer

During photosynthesis, plants take in carbon dioxide and water, disassemble the molecules and convert them into sugar and oxygen. The water molecules are split into hydrogen and oxygen, and the hydrogen joins carbon dioxide to create sugars. The excess oxygen is released into the atmosphere during the respiration cycle.

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Full Answer

Inside the chloroplasts of green plants are pairs of structures called grana and stroma. When light strikes chlorophyll, the energy is captured and sent to the grana, where it is used to split water molecules. The remainder of the energy flows to the stroma, where it creates sugar molecules. These carbohydrates are carried to the plant's cells, while the excess oxygen and water vapor byproducts are purged from the plant's system.

Plants produce an enormous amount of oxygen, and scientists believe that the evolution of plants is what gave Earth the oxygen in its atmosphere in the first place. In addition, many species of plants filter not only carbon dioxide, but harmful molecules like benzene, toluene and formaldehyde from the air. The right mix of houseplants could allow a human being to survive in a completely sealed environment, or help improve the quality of air and reduce pollutants in a normal household.

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Related Questions

  • Q:

    What is a word equation for photosynthesis?

    A:

    A simple word equation that can be used to describe the process of photosynthesis is carbon dioxide + water —> glucose + oxygen + water. A balanced chemical equation for the process can be written as 6CO2 + 6H2O —> C6H12O6 + 6O2. Overall, photosynthesis uses light energy to convert carbon dioxide into a carbohydrate.

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  • Q:

    How does photosynthesis affect the environment?

    A:

    Photosynthesis plays an important role in the environment for several reasons as it helps clean the air because plants use the carbon dioxide in the air for photosynthesis, the plants produce oxygen as a by-product which all humans and animals need to live and it also makes plants grow, providing food for animals that feed on plants. Without plants, the world would quickly become uninhabitable for human and animal life. The oxygen would be used up and there would be no food to feed the animals that humans rely on for food.

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  • Q:

    What are three inputs of photosynthesis?

    A:

    The three inputs of photosynthesis are carbon dioxide, water and sunlight. During photosynthesis, plants used the sun's energy to change water and carbon dioxide into glucose, a carbohydrate energy source. Oxygen, a by-product of the process, is released into the air.

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  • Q:

    What do photosynthesis and respiration have in common?

    A:

    Photosynthesis and respiration are complementary processes that both involve carbon dioxide, water, glucose and oxygen, and this is what they have in common. Essentially, they are the same reactions, although the reactions occur in reverse. Photosynthesis converts water and carbon dioxide into glucose and oxygen, while respiration converts glucose and oxygen into carbon dioxide and water.

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