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 Nature. In this category "Leaf" we have 290 free PNG images with transparent background.

  • Falling Petals Download HQ Image Free PNG PNG Image
    Falling Petals Download HQ Image Free PNG
    Format: PNG
    Resolution: 1920x1080
    Size: 1.0MB
    Downloads: 282
  • Falling Petals HD Download HD PNG PNG Image
    Falling Petals HD Download HD PNG
    Format: PNG
    Resolution: 1920x1080
    Size: 523.4KB
    Downloads: 187
  • Falling Petals Image Free Download PNG HQ PNG Image
    Falling Petals Image Free Download PNG HQ
    Format: PNG
    Resolution: 1024x576
    Size: 299.3KB
    Downloads: 250
  • Falling Petals Photos PNG Image High Quality PNG Image
    Falling Petals Photos PNG Image High Quality
    Format: PNG
    Resolution: 852x480
    Size: 100.3KB
    Downloads: 188
  • Falling Petals Image Free HQ Image PNG Image
    Falling Petals Image Free HQ Image
    Format: PNG
    Resolution: 650x492
    Size: 125.7KB
    Downloads: 338
  • Falling Petals Free Download PNG HQ PNG Image
    Falling Petals Free Download PNG HQ
    Format: PNG
    Resolution: 894x894
    Size: 986.3KB
    Downloads: 280
  • Soap Bubbles Image Free Download Image PNG Image
    Soap Bubbles Image Free Download Image
    Format: PNG
    Resolution: 500x500
    Size: 99.2KB
    Downloads: 232
  • Soap Bubbles PNG Free Photo PNG Image
    Soap Bubbles PNG Free Photo
    Format: PNG
    Resolution: 600x332
    Size: 42.8KB
    Downloads: 241
  • Soap Bubbles Free Transparent Image HD PNG Image
    Soap Bubbles Free Transparent Image HD
    Format: PNG
    Resolution: 725x768
    Size: 84.9KB
    Downloads: 267
  • Soap Bubbles HD Image Free PNG PNG Image
    Soap Bubbles HD Image Free PNG
    Format: PNG
    Resolution: 1400x1611
    Size: 644.2KB
    Downloads: 285
  • Soap Bubbles HD Free Clipart HD PNG Image
    Soap Bubbles HD Free Clipart HD
    Format: PNG
    Resolution: 1024x768
    Size: 157.2KB
    Downloads: 216
  • Soap Bubbles Image Free PNG HQ PNG Image
    Soap Bubbles Image Free PNG HQ
    Format: PNG
    Resolution: 735x720
    Size: 127.5KB
    Downloads: 198
  • Gardening Free Download PNG HD PNG Image
    Gardening Free Download PNG HD
    Format: PNG
    Resolution: 1024x773
    Size: 1.2MB
    Downloads: 309
  • Gardening Image Free HD Image PNG Image
    Gardening Image Free HD Image
    Format: PNG
    Resolution: 432x480
    Size: 267.7KB
    Downloads: 187
  • Gardening Free HQ Image PNG Image
    Gardening Free HQ Image
    Format: PNG
    Resolution: 2400x1797
    Size: 178.7KB
    Downloads: 202
  • Gardening Free Transparent Image HD PNG Image
    Gardening Free Transparent Image HD
    Format: PNG
    Resolution: 1794x1237
    Size: 356.2KB
    Downloads: 200
  • Gardening Picture Free Download PNG HD PNG Image
    Gardening Picture Free Download PNG HD
    Format: PNG
    Resolution: 535x362
    Size: 383.9KB
    Downloads: 238
  • Gardening Free PNG HQ PNG Image
    Gardening Free PNG HQ
    Format: PNG
    Resolution: 512x512
    Size: 9.4KB
    Downloads: 223
  • Gardening HQ Image Free PNG PNG Image
    Gardening HQ Image Free PNG
    Format: PNG
    Resolution: 516x523
    Size: 97.9KB
    Downloads: 183
  • Green Energy Free Clipart HQ PNG Image
    Green Energy Free Clipart HQ
    Format: PNG
    Resolution: 512x512
    Size: 11.1KB
    Downloads: 193

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