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Photosynthesis | Biology | Science | Khan Academy

Some of the glucose that plants produce during photosynthesis is stored in fruits and roots. This is why we are able to eat carrots, potatoes, apples, water melons and all the others. These foods provide energy for humans and animals. Oxygen that is produced during photosynthesis is released into the atmosphere.

Photosynthesis - Educational Video for Kids

This oxygen is what we breathe and we cannot live without it. While it is important that photosynthesis provides food and oxygen, its impact on our daily lives is far more extensive.

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Photosynthesis is so essential to life on earth that most living organisms, including humans, cannot survive without it. All of our energy for growth, development and physical activity comes from eating food from plants and animals. Animals obtain energy from eating plants. Plants obtain energy from glucose made during photosynthesis. Our major sources of energy such as natural gas, coal and oil were made millions of years ago from the remains of dead plants and animals which we already know got their energy from photosynthesis.

Photosynthesis is also responsible for balancing oxygen and carbon dioxide levels in the atmosphere. Plants absorb carbon dioxide from the air and release oxygen during the process of photosynthesis.

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Home Photosynthesis for Kids. Photosynthesis for Kids What is Photosynthesis? What is needed for Photosynthesis? Carbon dioxide from the air passes through small pores holes in the leaves. These pores are called stomata. Water is absorbed by the roots and passes through vessels in the stem on its way to the leaves. Sunlight is absorbed by a green chemical in the leaves.

What happens during Photosynthesis?

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It is this energy that is used to split water molecules into hydrogen and oxygen. Oxygen is released from the leaves into the atmosphere. Hydrogen and carbon dioxide are used to form glucose or food for plants. Here is the process in greater detail: Photosynthesis occurs in two stages commonly known as Light dependent Reactions and the Calvin Cycle.

Development of the idea

Light dependent Reactions Light dependent reactions occur in the thylakoid membrane of the chloroplasts and take place only when light is available. Chlorophyll and other pigments absorb energy from sunlight. This energy is transferred to the photosystems responsible for photosynthesis.


Water is used to provide electrons and hydrogen ions but also produces oxygen. Plants are also crucial to human life because we rely on them as a source of food for ourselves and for the animals that we eat. History Government U. Cities U. Plant Kingdom.


Carnivorous Plants. See also:.

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