The Translocation of Nutrients in Leaves

In this video we explain the process of the color changes in leaves throughout the seasons. The leaves begin to change color because of the translocation of nutrients, or the movement of nutrients in the leaf. We describe that accessory pigments, anthocyanins (which turns leaves red) and carotenoids (which turn leaves orange), protect the leaf from oxidation and remain in the leaves until they fall. In the winter, the nutrients are stored in the roots so the tree can remain alive while there isn't enough sunlight for photosynthesis. Also, it is the chlorophyll which makes leaves their bright green color. We see this green color because the chlorophyll molecule absorbs all red, orange and blue-purple light. The chloroplast is a small bacterium that lives inside leaf cells; it is where photosynthesis takes place. Carbon dioxide enters leaves though the stomata, the leaves absorb water and sunlight and being photosynthesis. Enjoy!
Music by Meredith Miller and Arden Bronstein

Category:

Education

Tags:

• Natural Science
• Boston University
• CGS
• Leaves
• Photosynthesis
• Chlorophyll
• Plants
• Seasons
• Educational