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Tuesday, January 31, 2023

Why are the leaves of plants green?

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Quitzé Fernández
Quitzé Fernándezhttps://www.amonite.com.mx
Amonite es un sitio dedicado a la divulgación científica para niños y jóvenes. Somos un grupo de amigos que escucha, cuenta historias y las plasma en algo parecido a un papel. Por medio de la ilustración y los medios audiovisuales buscamos acercar las novedades de ciencia y tecnología con un lenguaje accesible para todos. Amonite es un proyecto binacional editado y diseñado entre México y Argentina. Nace en 2017 a iniciativa de Quitzé Fernández, quien obtuvo en 2013 el Premio Nacional de Periodismo y Divulgación Científica, convocado por el Consejo Nacional de Ciencia y Tecnología de México (Conacyt), con la crónica La mujer que encontró dinosaurios en el patio de su casa. A él se unieron los ilustradores Daniel Galindo y Jess Silva, que han generado trabajo visual para diarios e instituciones del norte de México; y más adelante los periodistas José Juan Zapata y Jessica Jaramillo, en la edición y generación de contenido, desde Buenos Aires, Argentina. Todos ellos forman parte del staff permanente de Amonite, junto a un grupo de colaboradores que aportan sus visiones periodísticas, visuales y literarias del mundo de la ciencia.

Photo: sohail nachiti (Pexels)

The characteristic color of plants and vegetation on planet earth has to do with the photosynthesis process that is vital for their existence.

It is well said that “green is life” and for plants it could not be more literal. The color of the leaves and stems of most plants has to do with colorophyllum, a molecule that allows plants to carry out photosynthesis and obtain energy. This substance is found inside cell organelles called chloroplasts.

Now why green? it has to do with the photons that are absorbed and reflected by chloroplasts. Plant pigments absorb the red and blue parts of the solar spectrum, but reflect green light.

Photosynthesis is the chemical reaction where carbon dioxide (CO2) and water form sugars and produce oxygen in the presence of light energy. Plants use the sugars produced in photosynthesis as a food source that is energy for the plant.

Source: National Geographic

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