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.

  • Leaves Green Free HD Image PNG Image
    Leaves Green Free HD Image
    Format: PNG
    Resolution: 2000x2021
    Size: 5.3MB
    Downloads: 86
  • Leaves Green Ivy Hanging Free HQ Image PNG Image
    Leaves Green Ivy Hanging Free HQ Image
    Format: PNG
    Resolution: 860x377
    Size: 278.3KB
    Downloads: 84
  • Ivy Hanging Download Free Image PNG Image
    Ivy Hanging Download Free Image
    Format: PNG
    Resolution: 820x662
    Size: 251.3KB
    Downloads: 84
  • Ivy Hanging Download HQ PNG Image
    Ivy Hanging Download HQ
    Format: PNG
    Resolution: 600x600
    Size: 299.0KB
    Downloads: 84
  • Water Drop Leaf PNG Image High Quality PNG Image
    Water Drop Leaf PNG Image High Quality
    Format: PNG
    Resolution: 516x502
    Size: 214.9KB
    Downloads: 83
  • Leaves Green Ivy Hanging HD Image Free PNG Image
    Leaves Green Ivy Hanging HD Image Free
    Format: PNG
    Resolution: 820x796
    Size: 506.2KB
    Downloads: 82
  • Photos Leaves Green Ivy Hanging PNG Image
    Photos Leaves Green Ivy Hanging
    Format: PNG
    Resolution: 860x768
    Size: 628.9KB
    Downloads: 80
  • 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 PNG File HD PNG Image
    Water Drop Leaf PNG File HD
    Format: PNG
    Resolution: 800x367
    Size: 301.1KB
    Downloads: 78
  • Water Leaf Tree Download HQ PNG Image
    Water Leaf Tree Download HQ
    Format: PNG
    Resolution: 626x418
    Size: 159.5KB
    Downloads: 78
  • Fresh Leaves Green HD Image Free PNG Image
    Fresh Leaves Green HD Image Free
    Format: PNG
    Resolution: 2291x1850
    Size: 2.7MB
    Downloads: 77
  • Leaves Green HD Image Free PNG Image
    Leaves Green HD Image Free
    Format: PNG
    Resolution: 900x464
    Size: 152.5KB
    Downloads: 77
  • Single Green Leaves Free PNG HQ PNG Image
    Single Green Leaves Free PNG HQ
    Format: PNG
    Resolution: 1885x2257
    Size: 181.6KB
    Downloads: 77
  • Water Drop Leaf Dew Free PNG HQ PNG Image
    Water Drop Leaf Dew Free PNG HQ
    Format: PNG
    Resolution: 727x1013
    Size: 575.5KB
    Downloads: 76
  • Green Leaves Organic PNG Free Photo PNG Image
    Green Leaves Organic PNG Free Photo
    Format: PNG
    Resolution: 1700x1246
    Size: 2.0MB
    Downloads: 76
  • Ivy Hanging Free HD Image PNG Image
    Ivy Hanging Free HD Image
    Format: PNG
    Resolution: 820x657
    Size: 151.6KB
    Downloads: 75
  • Water Leaf Tree PNG Image High Quality PNG Image
    Water Leaf Tree PNG Image High Quality
    Format: PNG
    Resolution: 500x507
    Size: 106.2KB
    Downloads: 74
  • Water Drop Leaf HQ Image Free PNG Image
    Water Drop Leaf HQ Image Free
    Format: PNG
    Resolution: 600x197
    Size: 190.0KB
    Downloads: 73
  • Leaves Pic Green Ivy Hanging PNG Image
    Leaves Pic Green Ivy Hanging
    Format: PNG
    Resolution: 600x600
    Size: 113.4KB
    Downloads: 72
  • Water Drop Leaf PNG File HD PNG Image
    Water Drop Leaf PNG File HD
    Format: PNG
    Resolution: 600x420
    Size: 137.0KB
    Downloads: 71

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