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.

  • Ice Cube Download Free Image PNG Image
    Ice Cube Download Free Image
    Format: PNG
    Resolution: 1073x360
    Size: 618.3KB
    Downloads: 241
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    Ice Cube Free Download PNG HD
    Format: PNG
    Resolution: 623x431
    Size: 402.0KB
    Downloads: 184
  • Colored Dandelion Free HD Image PNG Image
    Colored Dandelion Free HD Image
    Format: PNG
    Resolution: 794x1005
    Size: 326.3KB
    Downloads: 207
  • Colored Dandelion Download HQ PNG PNG Image
    Colored Dandelion Download HQ PNG
    Format: PNG
    Resolution: 600x601
    Size: 381.1KB
    Downloads: 275
  • Colored Dandelion Download PNG Download Free PNG Image
    Colored Dandelion Download PNG Download Free
    Format: PNG
    Resolution: 564x836
    Size: 263.1KB
    Downloads: 218
  • Colored Dandelion HD PNG Download Free PNG Image
    Colored Dandelion HD PNG Download Free
    Format: PNG
    Resolution: 564x789
    Size: 331.5KB
    Downloads: 205
  • Colored Dandelion Image Download HD PNG PNG Image
    Colored Dandelion Image Download HD PNG
    Format: PNG
    Resolution: 792x612
    Size: 12.5KB
    Downloads: 230
  • Colored Dandelion Photos PNG Download Free PNG Image
    Colored Dandelion Photos PNG Download Free
    Format: PNG
    Resolution: 650x1011
    Size: 449.2KB
    Downloads: 234
  • Colored Dandelion Free Download PNG HD PNG Image
    Colored Dandelion Free Download PNG HD
    Format: PNG
    Resolution: 650x391
    Size: 62.9KB
    Downloads: 202
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    Colored Dandelion Image HQ Image Free PNG
    Format: PNG
    Resolution: 600x600
    Size: 112.7KB
    Downloads: 184
  • Colored Dandelion HD Image Free PNG PNG Image
    Colored Dandelion HD Image Free PNG
    Format: PNG
    Resolution: 1181x1181
    Size: 284.7KB
    Downloads: 234
  • Colored Dandelion Free HD Image PNG Image
    Colored Dandelion Free HD Image
    Format: PNG
    Resolution: 800x1000
    Size: 538.1KB
    Downloads: 230
  • Dandelion Free Download Image PNG Image
    Dandelion Free Download Image
    Format: PNG
    Resolution: 1955x2000
    Size: 444.4KB
    Downloads: 247
  • Dandelion Free Clipart HQ PNG Image
    Dandelion Free Clipart HQ
    Format: PNG
    Resolution: 500x500
    Size: 118.4KB
    Downloads: 245
  • Dandelion Download Download Free Image PNG Image
    Dandelion Download Download Free Image
    Format: PNG
    Resolution: 960x720
    Size: 634.7KB
    Downloads: 195
  • Dandelion HD PNG Free Photo PNG Image
    Dandelion HD PNG Free Photo
    Format: PNG
    Resolution: 800x800
    Size: 74.7KB
    Downloads: 253
  • Dandelion Image PNG Download Free PNG Image
    Dandelion Image PNG Download Free
    Format: PNG
    Resolution: 600x600
    Size: 89.5KB
    Downloads: 199
  • Dandelion Free Photo PNG PNG Image
    Dandelion Free Photo PNG
    Format: PNG
    Resolution: 1200x900
    Size: 495.3KB
    Downloads: 199
  • Dandelion Photos Download Free Image PNG Image
    Dandelion Photos Download Free Image
    Format: PNG
    Resolution: 450x333
    Size: 84.0KB
    Downloads: 234
  • Dandelion Free Download PNG HQ PNG Image
    Dandelion Free Download PNG HQ
    Format: PNG
    Resolution: 600x600
    Size: 71.8KB
    Downloads: 292

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