virginia bluebells, mertensia virginica. grows in masses in moist woods, especially on floodplains. western illinois in mississippi river floodplain. - 光合作用 個照片及圖片檔
leaf cross section, privet (ligustrum), 25x. shows: palisade mesophyll, spongy mesophyll, epidermis, and a vein (a vascular bundle with xylem and phloem). - 光合作用 個照片及圖片檔顯微鏡, 木質部, 樹葉
helianthus (sunflower), herbaceous dicot, stem cross section, vascular bundles, cortex, pith. 25x - 光合作用 個照片及圖片檔科學顯微圖片, 木髓, 維管束
pattern in nature. blue grama grass seed head. bouteloua gracilis. capitol reef national park, utah. usa - 光合作用 個照片及圖片檔藍色, 圓形
Jillian Sterman, left, and Polina Bulygina, interns with B4WARMED experiment in a forest measure Photosynthesis in native plants on Wednesday,...工作
Cyanobacteria, a primitive photosynthetic organism, generated the oxygen needed for living creatures to grow from microbes to humans to whales.
one red vine leaf among yellow wine leaves in autumn, in the alsace vineyards, near colmar, france - 光合作用 個照片及圖片檔與眾不同, 秋天
different species of cacti growing in their natural environment in the sonoran desert in arizona, usa - 光合作用 個照片及圖片檔
