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? 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. 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. Do you remember what happens to the oxygen? ATP is an energy storage molecule. What have you learned so far? What does Photosynthesis produce? Photosynthesis is important because it provides two main things: food oxygen Some of the glucose that plants produce during photosynthesis is stored in fruits and roots. This site uses cookies: Find out more. Okay, thanks. The plants of course! It was only because of photosynthesis that more and more oxygen was made which meant that animals and humans could develop.
Now that you know what photosynthesis is, hopefully you understand the importance of looking after our precious and mighty clever plants! Test your knowledge by taking our quiz — all answers can be found by coming back to this page! Plants and Science. Please email or share this article! Email Pin FB. The oxygen plants produce during photosynthesis is released into the air people breathe every day.
As people breathe in oxygen, they release carbon dioxide. Plants use carbon dioxide in the process of photosynthesis.
Thus, plants are responsible for balancing the oxygen and carbon dioxide levels in the air. In addition, some plants store the glucose produced during photosynthesis in fruits and roots. Some of these fruits and roots are apples, carrots, strawberries and other delicious foods people enjoy eating. Fun With Science Life Science Basics and Experiments Photosynthesis for Kids While humans and animals eat plants and other animals as food, plants can make their food using light and a process called photosynthesis.
What Is Photosynthesis? While the process can be complicated, it can be simply written with the following word equation: Teaching Photosynthesis How Does a Greenhouse Work? Cellular Respiration Worksheets for Middle School.
How Photosynthesis Happens Photosynthesis happens in the leaves of the plants where chloroplasts live in cells. Chloroplasts Just like humans, plants are made up of thousands of cells. Stage One: Light Dependent Reactions The first stage of photosynthesis is called the light dependent reactions stage. Sunlight hits the chlorophyll in the chloroplasts and excites electrons.
The excited electrons break free from the chlorophyll. Since one electron just left the chlorophyll, it must be replaced. The free electrons then undergo a chemical reaction to create ATP and NADPH , which are both energy molecules needed for the second stage of photosynthesis.
Carbon dioxide from the air is absorbed through holes in the leaves of the plant. The carbon dioxide molecule binds to a simple sugar called RuBP. The following video demonstrates the process from beginning to end:. Photosynthesis Is Important Photosynthesis is the backbone of life on Earth.
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