A leaf is the associate organ of a tracheophyte and is that the principal lateral appendage of the stem. The leaves and stem along with type the shoot. Leaves are together said as foliage, as in 'autumn foliage'. A leaf is the associate organ of a tracheophyte and is that the principal lateral appendage of the stem. The leaves and stem along with type the shoot. Leaves are together said as foliage, as in 'autumn foliage'.
A leaf could be a skinny, dorsiventrally planar organ, sometimes borne on top of the ground and specialised for chemical change. In most leaves, the first chemical process tissue, the palisade mesophyll, is found on the side of the blade or plate of the leaf. However in some species, together with the mature foliage of Eucalyptus, palisade mesophyll is gift on each side and also the leaves are aforementioned to be bilaterally symmetric. Most leaves have a distinct side (ad axial) and lower surface (axial) that take issue in colour, hairiness, the number of stomata (pores that intake and output gases), the quantity and structure of epicuticular wax and different options.
Leaves will have many various shapes, sizes and textures. The broad, flat leaves with complicated venation of flowering plants are called megaphylls and also the species that bear them, the bulk, as broad-leafed or megaphyllous plants. Within the clubmosses, with totally different biological process origins, the leaves are straightforward (with solely one vein) and are called microphylls. Some leaves, like bulb scales, don't seem to be on top of the ground. In several aquatic species, the leaves are submerged in water. Succulent plants typically have thick juicy leaves, however, some leaves ar while not major chemical process operates and will be dead at maturity, as in some cataphylls and spines. What is more, many sorts of leaf-like structures found in tube-shaped structure plants don't seem to be completely homologous with them. Examples embody planar plant stems known as phylloclades and cladodes, and planar leaf stems known as phyllodes that take issue from leaves each in their structure and origin. Some structures of non-vascular plants look and performance very like leaves. Examples embody the phyllids of mosses and liverworts. Midvein (Primary vein) Secondary Leaf.

In this sub category you can download free PNG images: Leaves Nature. In this category "Leaves" we have 123 free PNG images with transparent background.

  • Water Leaf Tree Free PNG HQ PNG Image
    Water Leaf Tree Free PNG HQ
    Format: PNG
    Resolution: 2438x1587
    Size: 4.6MB
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  • Ivy Hanging Free Transparent Image HQ PNG Image
    Ivy Hanging Free Transparent Image HQ
    Format: PNG
    Resolution: 1024x1024
    Size: 1.7MB
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  • Ivy Hanging Free PNG HQ PNG Image
    Ivy Hanging Free PNG HQ
    Format: PNG
    Resolution: 900x450
    Size: 387.9KB
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  • Water Drop Leaf PNG Free Photo PNG Image
    Water Drop Leaf PNG Free Photo
    Format: PNG
    Resolution: 820x622
    Size: 328.7KB
    Downloads: 70
  • Pic Ivy Hanging PNG Image High Quality PNG Image
    Pic Ivy Hanging PNG Image High Quality
    Format: PNG
    Resolution: 600x600
    Size: 115.4KB
    Downloads: 70
  • Water Picture Drop Leaf Free Download PNG HD PNG Image
    Water Picture Drop Leaf Free Download PNG HD
    Format: PNG
    Resolution: 705x451
    Size: 245.8KB
    Downloads: 69
  • Ivy Hanging HD Image Free PNG Image
    Ivy Hanging HD Image Free
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    Resolution: 999x799
    Size: 672.4KB
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  • Water Drop Leaf Free Clipart HQ PNG Image
    Water Drop Leaf Free Clipart HQ
    Format: PNG
    Resolution: 820x333
    Size: 146.6KB
    Downloads: 68
  • Fresh Leaves Green Photos Free Transparent Image HD PNG Image
    Fresh Leaves Green Photos Free Transparent Image HD
    Format: PNG
    Resolution: 3528x2225
    Size: 5.5MB
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  • Water Drop Leaf Dew Free Download Image PNG Image
    Water Drop Leaf Dew Free Download Image
    Format: PNG
    Resolution: 1000x1000
    Size: 223.6KB
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  • Water Leaf Tree Photos Free Clipart HQ PNG Image
    Water Leaf Tree Photos Free Clipart HQ
    Format: PNG
    Resolution: 2953x2953
    Size: 1.4MB
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  • Ivy Hanging PNG Free Photo PNG Image
    Ivy Hanging PNG Free Photo
    Format: PNG
    Resolution: 600x600
    Size: 200.3KB
    Downloads: 66
  • Leaves Green Free Download Image PNG Image
    Leaves Green Free Download Image
    Format: PNG
    Resolution: 3376x3516
    Size: 3.5MB
    Downloads: 66
  • Photos Ivy Hanging Download HQ PNG Image
    Photos Ivy Hanging Download HQ
    Format: PNG
    Resolution: 860x863
    Size: 1.1MB
    Downloads: 65
  • Single Green Leaves Download HQ PNG Image
    Single Green Leaves Download HQ
    Format: PNG
    Resolution: 850x763
    Size: 469.3KB
    Downloads: 65
  • Single Green Leaves PNG Free Photo PNG Image
    Single Green Leaves PNG Free Photo
    Format: PNG
    Resolution: 2016x1929
    Size: 3.1MB
    Downloads: 62
  • Water Drop Leaf Download Free Image PNG Image
    Water Drop Leaf Download Free Image
    Format: PNG
    Resolution: 5820x4158
    Size: 11.1MB
    Downloads: 61
  • Leaves Green Ivy Hanging PNG File HD PNG Image
    Leaves Green Ivy Hanging PNG File HD
    Format: PNG
    Resolution: 860x778
    Size: 596.0KB
    Downloads: 60
  • Ivy Hanging Free Download PNG HQ PNG Image
    Ivy Hanging Free Download PNG HQ
    Format: PNG
    Resolution: 820x561
    Size: 378.3KB
    Downloads: 60
  • Fresh Leaves Green Free Transparent Image HQ PNG Image
    Fresh Leaves Green Free Transparent Image HQ
    Format: PNG
    Resolution: 1006x366
    Size: 280.7KB
    Downloads: 60

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