Top Cactus PNG Images

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A cactus (plural cacti) belongs to the plant family Cactaceae which comprises of about 127 genera with nearly 1750 known species of the order Caryophyllales. The word "cactus" is derived from Latin and from the Ancient Greek , kaktos which is a name that was originally used by Theophrastus for a spiny plant whose identity is not certain. Cacti can be found in a wide range of shapes and sizes. Most cacti live in habitats that are subjected to at least some drought. Many live in extremely dry environments such as the Atacama Desert which is one of the driest places on earth. Cacti exhibit many adaptations to conserve water. Almost all cacti are succulents which means that they have thickened, fleshy parts adapted to store water. The stem is the only part of most cacti where this vital process takes place, unlike many other succulents. Most species of cacti retain only spines which are highly modified leaves as they have already lost their true leaves. Spines help prevent water loss by reducing air flow close to the cactus and providing some shade as well as defending themselves against herbivores. Enlarged stems carry out photosynthesis in the absence of leaves. Cacti are native to the Americas and range throughout Patagonia in the south to parts of western Canada in the north, except for Rhipsalis baccifera, which also grows in Africa and Sri Lanka.

In this sub category you can download free PNG images: Cactus Nature. In this category "Cactus" we have 29 free PNG images with transparent background.

  • Cactus Plant Transparent Image PNG Image

    Cactus Plant Transparent Image
    Format: PNG
    Resolution: 315x457
    Size: 170.2KB
    Downloads: 367
  • Cactus Clipart PNG Image

    Cactus Clipart
    Format: PNG
    Resolution: 1204x2255
    Size: 92.0KB
    Downloads: 347
  • Cactus Plant Image PNG Image

    Cactus Plant Image
    Format: PNG
    Resolution: 1499x667
    Size: 834.8KB
    Downloads: 316
  • Cactus Photos PNG Image

    Cactus Photos
    Format: PNG
    Resolution: 774x1024
    Size: 786.4KB
    Downloads: 311
  • Cactus Plant File PNG Image

    Cactus Plant File
    Format: PNG
    Resolution: 400x643
    Size: 328.9KB
    Downloads: 294
  • Cactus Transparent Image PNG Image

    Cactus Transparent Image
    Format: PNG
    Resolution: 999x999
    Size: 130.8KB
    Downloads: 279
  • Cactus Image PNG Image

    Cactus Image
    Format: PNG
    Resolution: 1024x1365
    Size: 300.6KB
    Downloads: 263
  • Cactus File PNG Image

    Cactus File
    Format: PNG
    Resolution: 720x1118
    Size: 361.9KB
    Downloads: 253
  • Crossstitch Succulent Plant Photography Cactaceae Stock PNG Image

    Crossstitch Succulent Plant Photography Cactaceae Stock
    Format: PNG
    Resolution: 1000x1000
    Size: 454.2KB
    Downloads: 241