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photosynthesis
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Photosynthesis
How are plant cells different from animal cells?
How does photosynthesis work?
The relationship between photosynthesis and breathing
Learn about the greenness of plants
Learn how the layered arrangement of chlorophyll molecules within a leaf increases its photosynthetic output.
Chloroplast structure
The process of photosynthesis in plants explained
Diagram of the light reaction of photosynthesis Photosynthetic electron pathway
For Students
Photosynthesis diagram showing how water, light, and carbon dioxide are absorbed by a plant and that oxygen and sugars are produced. Also show a person to illustrate the oxygen/carbon dioxide cycle between plants and animals.
Pop Quiz: 13 Things to Know About Photosynthesis
Quizzes
greylag. Flock of Greylag geese during their winter migration at Bosque del Apache National Refugee, New Mexico. greylag goose (Anser anser)
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Chlorophyll pigment in chloroplasts within plant cells. Microscopic organelles photosynthesis green
What did Jan Ingenhousz discover about photosynthesis?
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Videos

How are plant cells different from animal cells?
All living things are composed of cells.
Video: Encyclopædia Britannica, Inc.
How does photosynthesis work?
Learn about the process of photosynthesis.
Video: Encyclopædia Britannica, Inc.
The relationship between photosynthesis and breathing
Learn about the role of photosynthesis in glucose and oxygen production in plants....
Video: Encyclopædia Britannica, Inc.
Learn about the greenness of plants
The perfect absorbers of solar radiation are black objects, yet plants, which depend...
Video: © MinuteEarth (A Britannica Publishing Partner)
Learn how the layered arrangement of chlorophyll molecules within a leaf increases its photosynthetic output.
Molecules of chlorophyll, the key photosynthetic pigment in green plants, are arranged...
Video: © MinuteEarth (A Britannica Publishing Partner)
The process of photosynthesis in plants explained
The location, importance, and mechanisms of photosynthesis. Study the roles of chloroplasts,...
Video: Encyclopædia Britannica, Inc.
How does photosynthesis work in plants?
Chloroplasts play a key role in the process of photosynthesis. Learn about photosynthesis's...
Video: Encyclopædia Britannica, Inc.
Learn how plants split water molecules to replace electrons lost by chlorophyll during photosynthesis
Time-lapse photography of an aquatic plant (Elodea) releasing oxygen bubbles...
Video: Encyclopædia Britannica, Inc.
Why do some trees lose their leaves in autumn?
Learn why leaves of deciduous trees change colour in autumn.
Video: Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Citalliance/Dreamstime.com
Understand the carbon and oxygen cycles in the atmosphere
Living organisms influence the cycling of carbon and oxygen through the environment.
Video: Created and produced by QA International. © QA International, 2010. All rights reserved. www.qa-international.com
How energy can change from one form to another
How energy can change from one form to another. Examples presented include a lightbulb,...
Video: Encyclopædia Britannica, Inc.
Explore the anatomy of a plant's mesophyll to understand how chlorophyll generates a green appearance
An explanation of how structures inside the leaf contribute to plant coloration.
Video: Encyclopædia Britannica, Inc.
Which came first—the rain or the rainforest?
Plants play a key role in perpetuating the cycle of evaporation, condensation, and...
Video: © MinuteEarth (A Britannica Publishing Partner)
How phytoplankton function and survive in the ocean
Learn about phytoplankton, plantlike types of microscopic algae that live suspended...
Video: Encyclopædia Britannica, Inc.
The function and structure of chloroplasts
Chloroplasts circulate within plant cells. The green coloration comes from chlorophyll...
Video: Encyclopædia Britannica, Inc.
Dark reactions in photosynthesis explained
During the dark reaction (light-independent stage) of photosynthesis, sugars such...
Video: Encyclopædia Britannica, Inc.

Images

Photosynthesis
Diagram of photosynthesis showing how water, light, and carbon dioxide are absorbed...
Encyclopædia Britannica, Inc.
Chloroplast structure
The internal (thylakoid) membrane vesicles are organized into stacks, which reside...
Encyclopædia Britannica, Inc.
Diagram of the light reaction of photosynthesis
The light reaction of photosynthesis. The light reaction occurs in two photosystems...
© Merriam-Webster Inc.
Photosynthetic electron pathway
Flow of electrons during the light reaction stage of photosynthesis. Arrows pointing...
Encyclopædia Britannica, Inc.
Chemiosmosis in chloroplasts
Chemiosmosis in chloroplasts that results in the donation of a proton for the production...
Encyclopædia Britannica, Inc.
C3 carbon fixation pathway
Pathway of carbon dioxide fixation and reduction in photosynthesis, the reductive...
Encyclopædia Britannica, Inc.
Cornfield
Rows of tassled corn (Zea mays) in a Nebraska field.
© Julianne Gentry—iStock/Getty Images
Prickly pear
Prickly pear cactus (Opuntia), Arizona.
© Index Open
spinach chloroplast
Electron micrograph of an isolated spinach chloroplast.
Courtesy of the Lawrence Berkeley National Laboratory, University of California, Berkeley
photosynthesis
In photosynthesis, plants consume carbon dioxide and water and produce glucose and...
Encyclopædia Britannica, Inc.
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