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 Leaf Download HQ Image Free PNG PNG Image
    Falling Leaf Download HQ Image Free PNG
    Format: PNG
    Resolution: 472x349
    Size: 159.4KB
    Downloads: 207
  • Falling Leaf HD Free Download PNG HQ PNG Image
    Falling Leaf HD Free Download PNG HQ
    Format: PNG
    Resolution: 889x899
    Size: 128.8KB
    Downloads: 212
  • Falling Leaf Image Free Clipart HD PNG Image
    Falling Leaf Image Free Clipart HD
    Format: PNG
    Resolution: 1920x1080
    Size: 1.4MB
    Downloads: 244
  • Falling Leaf Photos Download HD PNG PNG Image
    Falling Leaf Photos Download HD PNG
    Format: PNG
    Resolution: 852x480
    Size: 138.5KB
    Downloads: 286
  • Falling Leaf Download Free Image PNG Image
    Falling Leaf Download Free Image
    Format: PNG
    Resolution: 590x300
    Size: 283.9KB
    Downloads: 207
  • Falling Leaf Image Free PNG HQ PNG Image
    Falling Leaf Image Free PNG HQ
    Format: PNG
    Resolution: 1024x1143
    Size: 468.2KB
    Downloads: 208
  • Falling Leaf HQ Image Free PNG PNG Image
    Falling Leaf HQ Image Free PNG
    Format: PNG
    Resolution: 545x472
    Size: 179.7KB
    Downloads: 193
  • Falling Leaf Free Photo PNG PNG Image
    Falling Leaf Free Photo PNG
    Format: PNG
    Resolution: 1920x1080
    Size: 686.5KB
    Downloads: 224
  • Falling Petals Free Clipart HQ PNG Image
    Falling Petals Free Clipart HQ
    Format: PNG
    Resolution: 1920x1080
    Size: 543.3KB
    Downloads: 236
  • Falling Petals Download HD PNG PNG Image
    Falling Petals Download HD PNG
    Format: PNG
    Resolution: 852x480
    Size: 75.8KB
    Downloads: 238
  • 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 Free Download PNG HD PNG Image
    Falling Petals Free Download PNG HD
    Format: PNG
    Resolution: 730x1095
    Size: 190.1KB
    Downloads: 210
  • Falling Petals Picture Download HQ PNG PNG Image
    Falling Petals Picture Download HQ PNG
    Format: PNG
    Resolution: 1920x1080
    Size: 560.2KB
    Downloads: 206
  • 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
  • Falling Petals Free HQ Image PNG Image
    Falling Petals Free HQ Image
    Format: PNG
    Resolution: 894x894
    Size: 842.2KB
    Downloads: 212
  • Soap Bubbles Free Download Image PNG Image
    Soap Bubbles Free Download Image
    Format: PNG
    Resolution: 1921x1893
    Size: 1.1MB
    Downloads: 318

RELATED CATEGORIES

Leaf PNG Category

Leaf

Wood PNG Category

Wood

Leaf PNG Category

Leaf

Lilac PNG Category

Lilac

Flower PNG Category

Flower

Watermelon PNG Category

Watermelon

Plant PNG Category

Plant

Leaf PNG Category

Leaf

Wood PNG Category

Wood

Plant PNG Category

Plant