Q:

What is the waste product of photosynthesis?

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Quick Answer

Photosynthesis, which is the process through which some living organisms, including most plants and some fungi, make their own food, produces oxygen as a waste product. The process of photosynthesis in plants is the reverse of the respiration process in humans. While humans breathe in oxygen and expel carbon dioxide, plants ingest carbon dioxide and dispel oxygen.

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What is the waste product of photosynthesis?
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Full Answer

While the processes of photosynthesis and respiration in plants and humans are similar, they take place for different reasons. Plants rely on photosynthesis to produce food and energy that they need to survive and carry out basic functions, including reproduction. Photosynthesis is considered to be a chemical reaction, and begins when water and carbon dioxide combine. The interaction of these two substances takes place only when sufficient light is available.

In addition to light, photosynthesis requires pigmentation called chlorophyll to take place. Chlorophyll helps to produce glucose and oxygen. After production, glucose may be converted into one of several substances. It can take the form of a starchy material or can transform into fats and oils. After completing its cycle, photosynthesis produces excess amounts of oxygen and smaller amounts of glucose, which are dispersed into the atmosphere upon exhalation. As with respiration, photosynthesis takes place during the day and night, but is more common during the day.

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Related Questions

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    Why is photosynthesis important?

    A:

    Photosynthesis is the ultimate source of the energy for all the food that humans require, as well as the source of the energy used to build the biological materials that humans use, such as wood, cotton and wool. It is also the major source of oxygen gas that all animals require.

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    Is photosynthesis endergonic or exergonic?

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    Photosynthesis is an endergonic reaction. An endergonic reaction requires or absorbs energy from its surroundings, while an exergonic reaction releases energy. Most reactions that create or synthesize compounds are endergonic.

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    When does photosynthesis occur?

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    Photosynthesis, the process by which plants convert the sun's energy to glucose, takes place during daylight hours when the plant's leaves are exposed to sunlight. This process only occurs in green plants and in some protist species. Carbon dioxide and water must also be present in order for photosynthesis to occur.

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