Travel Deep Inside a Leaf - Annotated Version | California Academy of Sciences

Please turn on subtitles with the CC (Closed Captions) button to see the explanatory annotations designed for educators. Transcript of closed captions: 0:05: We are approaching a redwood tree. To animate a scientifically accurate leaf, artists studied the texture of a redwood leaf specimen on a glass slide at high resolution. They even counted the stomata, and used that exact count for this film! 0:25: These leaves would be measured on a centimeter scale. Throughout the animation, we will gradually zoom in to smaller scales. 0:40: As we approach a single stoma, we are now on a millimeter scale. 0:48: As we enter the interior of the leaf, we see many individual palisade cells. These cells are where photosynthesis takes place; they are translucent to allow sunlight to enter. 1:00: As we approach a single palisade cell, we’ll zoom down to the micrometer scale. The shapes inside the cell are organelles: the bright globules at the bottom are the Golgi apparatus; th