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 Photos Drop Leaf Dew PNG Image
    Water Photos Drop Leaf Dew
    Format: PNG
    Resolution: 650x335
    Size: 196.9KB
    Downloads: 44
  • Water Drop Leaf Dew Free Download PNG HD PNG Image
    Water Drop Leaf Dew Free Download PNG HD
    Format: PNG
    Resolution: 1131x975
    Size: 84.5KB
    Downloads: 79
  • Water Drop Leaf Pic Free Download PNG HQ PNG Image
    Water Drop Leaf Pic Free Download PNG HQ
    Format: PNG
    Resolution: 926x880
    Size: 314.2KB
    Downloads: 100
  • Water Leaf Tree Free HQ Image PNG Image
    Water Leaf Tree Free HQ Image
    Format: PNG
    Resolution: 1006x950
    Size: 88.5KB
    Downloads: 49
  • Water Leaf Tree Photos Free Clipart HQ PNG Image
    Water Leaf Tree Photos Free Clipart HQ
    Format: PNG
    Resolution: 2953x2953
    Size: 1.4MB
    Downloads: 66
  • 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
  • Photos Leaves Green Ivy Hanging PNG Image
    Photos Leaves Green Ivy Hanging
    Format: PNG
    Resolution: 860x768
    Size: 628.9KB
    Downloads: 80
  • Leaves Pic Green Ivy Hanging PNG Image
    Leaves Pic Green Ivy Hanging
    Format: PNG
    Resolution: 600x600
    Size: 113.4KB
    Downloads: 72
  • Leaves Green Ivy Hanging Free HQ Image PNG Image
    Leaves Green Ivy Hanging Free HQ Image
    Format: PNG
    Resolution: 650x465
    Size: 161.0KB
    Downloads: 55
  • Ivy Hanging Download Free Image PNG Image
    Ivy Hanging Download Free Image
    Format: PNG
    Resolution: 820x662
    Size: 251.3KB
    Downloads: 84
  • Ivy Hanging HD Image Free PNG Image
    Ivy Hanging HD Image Free
    Format: PNG
    Resolution: 999x799
    Size: 672.4KB
    Downloads: 69
  • Ivy Hanging Free HD Image PNG Image
    Ivy Hanging Free HD Image
    Format: PNG
    Resolution: 820x657
    Size: 151.6KB
    Downloads: 75
  • Ivy Hanging Free PNG HQ PNG Image
    Ivy Hanging Free PNG HQ
    Format: PNG
    Resolution: 900x450
    Size: 387.9KB
    Downloads: 71
  • Fresh Leaves Green HD Image Free PNG Image
    Fresh Leaves Green HD Image Free
    Format: PNG
    Resolution: 2949x2382
    Size: 4.5MB
    Downloads: 50
  • Fresh Leaves Green HD Image Free PNG Image
    Fresh Leaves Green HD Image Free
    Format: PNG
    Resolution: 2291x1850
    Size: 2.7MB
    Downloads: 77
  • 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
    Downloads: 68
  • Leaves Green Free Clipart HD PNG Image
    Leaves Green Free Clipart HD
    Format: PNG
    Resolution: 715x715
    Size: 248.0KB
    Downloads: 46
  • Leaves Green Free Transparent Image HD PNG Image
    Leaves Green Free Transparent Image HD
    Format: PNG
    Resolution: 1023x687
    Size: 315.8KB
    Downloads: 94
  • Photos Leaves Green Download HQ PNG Image
    Photos Leaves Green Download HQ
    Format: PNG
    Resolution: 1024x829
    Size: 237.6KB
    Downloads: 89
  • Green Leaves Organic Free Download PNG HD PNG Image
    Green Leaves Organic Free Download PNG HD
    Format: PNG
    Resolution: 1600x1051
    Size: 1.2MB
    Downloads: 47

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