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.

  • Gardening Photos PNG File HD PNG Image
    Gardening Photos PNG File HD
    Format: PNG
    Resolution: 729x512
    Size: 152.9KB
    Downloads: 227
  • Evergreen Poster Leaf Fortnite Shrub PNG Free Photo PNG Image
    Evergreen Poster Leaf Fortnite Shrub PNG Free Photo
    Format: PNG
    Resolution: 1024x1024
    Size: 436.2KB
    Downloads: 227
  • Dandelion HQ Image Free PNG PNG Image
    Dandelion HQ Image Free PNG
    Format: PNG
    Resolution: 2244x6605
    Size: 845.1KB
    Downloads: 227
  • Growing Plant HD Image Free PNG PNG Image
    Growing Plant HD Image Free PNG
    Format: PNG
    Resolution: 960x578
    Size: 233.3KB
    Downloads: 226
  • Icicles Free Transparent Image HQ PNG Image
    Icicles Free Transparent Image HQ
    Format: PNG
    Resolution: 2193x1200
    Size: 3.3MB
    Downloads: 226
  • Icicles Photos Download Free Image PNG Image
    Icicles Photos Download Free Image
    Format: PNG
    Resolution: 736x272
    Size: 225.4KB
    Downloads: 224
  • Falling Leaf Free Photo PNG PNG Image
    Falling Leaf Free Photo PNG
    Format: PNG
    Resolution: 1920x1080
    Size: 686.5KB
    Downloads: 224
  • Growing Plant Picture Free Transparent Image HD PNG Image
    Growing Plant Picture Free Transparent Image HD
    Format: PNG
    Resolution: 865x359
    Size: 195.4KB
    Downloads: 223
  • Ground Photos PNG Free Photo PNG Image
    Ground Photos PNG Free Photo
    Format: PNG
    Resolution: 600x252
    Size: 221.3KB
    Downloads: 223
  • Gardening Free PNG HQ PNG Image
    Gardening Free PNG HQ
    Format: PNG
    Resolution: 512x512
    Size: 9.4KB
    Downloads: 223
  • Half Moon Free PNG HQ PNG Image
    Half Moon Free PNG HQ
    Format: PNG
    Resolution: 700x700
    Size: 72.9KB
    Downloads: 222
  • Ground HD Image Free PNG PNG Image
    Ground HD Image Free PNG
    Format: PNG
    Resolution: 2048x727
    Size: 616.5KB
    Downloads: 222
  • Green Energy HQ Image Free PNG PNG Image
    Green Energy HQ Image Free PNG
    Format: PNG
    Resolution: 600x564
    Size: 59.1KB
    Downloads: 221
  • Icicles Free Download PNG HQ PNG Image
    Icicles Free Download PNG HQ
    Format: PNG
    Resolution: 6999x2258
    Size: 4.0MB
    Downloads: 220
  • Gardening HD Free Transparent Image HD PNG Image
    Gardening HD Free Transparent Image HD
    Format: PNG
    Resolution: 2000x2000
    Size: 169.1KB
    Downloads: 220
  • Green Energy Image Free Transparent Image HD PNG Image
    Green Energy Image Free Transparent Image HD
    Format: PNG
    Resolution: 600x564
    Size: 36.0KB
    Downloads: 219
  • Half Moon PNG File HD PNG Image
    Half Moon PNG File HD
    Format: PNG
    Resolution: 918x980
    Size: 29.3KB
    Downloads: 219
  • Gardening Download Free Transparent Image HQ PNG Image
    Gardening Download Free Transparent Image HQ
    Format: PNG
    Resolution: 1694x1424
    Size: 443.0KB
    Downloads: 219
  • Yellow Dandelion Image Download HD PNG PNG Image
    Yellow Dandelion Image Download HD PNG
    Format: PNG
    Resolution: 500x481
    Size: 185.3KB
    Downloads: 218
  • Jasmine Garland Download HD PNG PNG Image
    Jasmine Garland Download HD PNG
    Format: PNG
    Resolution: 1121x1495
    Size: 675.8KB
    Downloads: 218

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