A leaf is the principal lateral appendage of the stem which is in turn part of a plant. Hence a leave is an organ of a vascular plant. The shoot is formed together by the stem and the leaves. Foliage is a term used for referring leaves collectively. As is one must have often heard, 'autumn foliage'. The characteristic of this plant organ is that it is a dorsoventrally flattened organ, usually borne above the ground, and specialised for its function of photosynthesis. Photosynthesis is the process of converting the intake of carbon dioxide into oxygen. The primary photosynthesis tissue, in most leaves, known as palisade mesophyll, is located on the upper side of the blade or lamina of the leaf. However there are still exceptions, like in some species, including the mature foliage of Eucalypts, palisade mesophyll is present on both sides and these leaves are said to be isobilateral.
Many leaves have a distinct upper surface, also known as adaxial and distinct lower surface called abaxial which differ in colour, the number of stomata ( stomata are the pores present on leaves that intake and output gases), hairiness, the amount and structure of epicuticular wax and other features. When talking about the colour of leaves, they are mostly green, but there are always exceptions.

In this sub category you can download free PNG images: Leaf Food. In this category "Leaf" we have 19 free PNG images with transparent background.

  • Euclidean Leaf,Vector Vector Leaf PNG Free Photo PNG Image
    Euclidean Leaf,Vector Vector Leaf PNG Free Photo
    Format: PNG
    Resolution: 1000x1000
    Size: 18.4KB
    Downloads: 987
  • Leaf Leaves Computer Green File Border PNG Image
    Leaf Leaves Computer Green File Border
    Format: PNG
    Resolution: 1134x1134
    Size: 946.2KB
    Downloads: 442
  • Green Mint Leaf Peppermint Free Download PNG HQ PNG Image
    Green Mint Leaf Peppermint Free Download PNG HQ
    Format: PNG
    Resolution: 1183x1063
    Size: 210.1KB
    Downloads: 417
  • Leaf Falling Green Leaves Maple Free Photo PNG PNG Image
    Leaf Falling Green Leaves Maple Free Photo PNG
    Format: PNG
    Resolution: 1864x1864
    Size: 485.7KB
    Downloads: 341
  • Leaf Green Cartoon Transparent Free Photo PNG PNG Image
    Leaf Green Cartoon Transparent Free Photo PNG
    Format: PNG
    Resolution: 8000x6540
    Size: 3.2MB
    Downloads: 339
  • Vegetable Basil Leaves Leaf Free Transparent Image HQ PNG Image
    Vegetable Basil Leaves Leaf Free Transparent Image HQ
    Format: PNG
    Resolution: 1181x1181
    Size: 732.4KB
    Downloads: 328
  • Fly Euclidean Material Vector Leaf HD Image Free PNG PNG Image
    Fly Euclidean Material Vector Leaf HD Image Free PNG
    Format: PNG
    Resolution: 800x800
    Size: 99.2KB
    Downloads: 327
  • Leaf Silicone Tree Telephone 5S Watercolor Green PNG Image
    Leaf Silicone Tree Telephone 5S Watercolor Green
    Format: PNG
    Resolution: 3885x3861
    Size: 2.1MB
    Downloads: 318
  • Be Organics Leaf Natural Android Free Download PNG HQ PNG Image
    Be Organics Leaf Natural Android Free Download PNG HQ
    Format: PNG
    Resolution: 346x883
    Size: 368.4KB
    Downloads: 312
  • Autumn Plant Leaf Maple Free PNG HQ PNG Image
    Autumn Plant Leaf Maple Free PNG HQ
    Format: PNG
    Resolution: 3550x1799
    Size: 847.3KB
    Downloads: 281
  • Raster Twitter Of Nut Graphics Scotland Gaelic PNG Image
    Raster Twitter Of Nut Graphics Scotland Gaelic
    Format: PNG
    Resolution: 601x601
    Size: 143.7KB
    Downloads: 252
  • Beads Universe Vegetables Granger Potter Pickled Fictional PNG Image
    Beads Universe Vegetables Granger Potter Pickled Fictional
    Format: PNG
    Resolution: 620x660
    Size: 17.2KB
    Downloads: 251
  • Leaves,Apple Leaves Leaf Apple Free PNG HQ PNG Image
    Leaves,Apple Leaves Leaf Apple Free PNG HQ
    Format: PNG
    Resolution: 2950x2094
    Size: 3.4MB
    Downloads: 250
  • Arts Silhouette Venzel Ali Hz. Ilim Kapisi PNG Image
    Arts Silhouette Venzel Ali Hz. Ilim Kapisi
    Format: PNG
    Resolution: 585x600
    Size: 144.1KB
    Downloads: 244
  • And Perfect Oil For Recipes Over Essential PNG Image
    And Perfect Oil For Recipes Over Essential
    Format: PNG
    Resolution: 1000x750
    Size: 411.4KB
    Downloads: 229
  • Budgie Solus Mate Linux Circle Distribution PNG Image
    Budgie Solus Mate Linux Circle Distribution
    Format: PNG
    Resolution: 1200x1200
    Size: 110.6KB
    Downloads: 227
  • Pattern Line Leaf Angle Symmetry Free HD Image PNG Image
    Pattern Line Leaf Angle Symmetry Free HD Image
    Format: PNG
    Resolution: 1333x1600
    Size: 1.2MB
    Downloads: 227
  • Budgie Distribution Solus Mate Linux Free Download Image PNG Image
    Budgie Distribution Solus Mate Linux Free Download Image
    Format: PNG
    Resolution: 512x512
    Size: 31.9KB
    Downloads: 221
  • Plants Design Leaf Illustration Graphics Download HD PNG PNG Image
    Plants Design Leaf Illustration Graphics Download HD PNG
    Format: PNG
    Resolution: 600x600
    Size: 29.9KB
    Downloads: 207

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