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arthropod

An arthropod (from Greek ἄρθρον arthron, "joint" and πούς pous, "foot") is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and paired jointed appendages. Arthropods form the phylum Euarthropoda, which includes insects, arachnids, myriapods, and crustaceans. The term Arthropoda as originally proposed refers to a proposed grouping of Euarthropods and the phylum Onychophora. Arthropods are characterized by their jointed limbs and cuticle made of chitin, often mineralised with calcium carbonate. The arthropod body plan consists of segments, each with a pair of appendages. The rigid cuticle inhibits growth, so arthropods replace it periodically by moulting. Their versatility has enabled them to become the most species-rich members of all ecological guilds in most environments. They have over a million described species, making up more than 80 per cent of all described living animal species, some of which, unlike most other animals, are very successful in dry environments. Arthropods range in size from the microscopic crustacean Stygotantulus up to the Japanese spider crab. Arthropods' primary internal cavity is a hemocoel, which accommodates their internal organs, and through which their haemolymph – analogue of blood – circulates; they have open circulatory systems.
Colorful insect. - Colorful insect: dragonfly ..
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Colorful insect.

Added month ago by Grażyna

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Butterfly. - A beautiful butterfly on a flower.
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Butterfly.

Added 4 months ago by Grażyna

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Apollo butterfly. - Cute butterfly Apollo.
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Apollo butterfly.

Added 4 months ago by Zeta

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life cycle - life cycle of Drosophila
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life cycle

Added year ago by Juliet

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Colorful butterflies - These are colorful butterflies
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Colorful butterflies

Added year ago by Ten

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Cherries - colorful jigsaw puzzle
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Cherries

Added year ago by andi

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Colorful wasp - lorem ipsum dolor sit amet
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Colorful wasp

Added year ago by Ayla

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Blue butterfly - lorem ipsum dolor sit amet
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Blue butterfly

Added year ago by Ayla

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pets and animals - beautiful animals and even more beautiful
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pets and animals

Added year ago by żaba

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pets and animals - beautiful animals and even more beautiful
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pets and animals

Added year ago by żaba

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Colorful butterfly - colorful puzzle jigsaw
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Colorful butterfly

Added year ago by andi

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Colorful butterfly - colorful puzzle puzzle
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Colorful butterfly

Added year ago by andi

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Colorful butterfly - colorful butterfly puzzle
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Colorful butterfly

Added year ago by andi

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Biting wasps - colorful puzzle jigsaw
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Biting wasps

Added year ago by andi

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Colorful butterfly - colorful puzzle puzzle
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Colorful butterfly

Added year ago by andi

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Jigsaw puzzle - complicated puzzle
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Jigsaw puzzle

Added year ago by andi

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Painting - complicated puzzle
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Painting

Added year ago by andi

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I was a butterfly - I was a butterfly but I gained weight
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I was a butterfly

Added year ago by andi

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nature - drinking floral nectar
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nature

Added year ago by stenia

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colorful butterfly - colorful butterflies are flying
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colorful butterfly

Added year ago by hala

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bee migration - bee, fly, stripes, wings
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bee migration

Added year ago by wieslawa

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MILLING HEAD - If you want to see an ant that can carry a weight 50 times larger than the weight of your body, put
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MILLING HEAD

Added year ago by Karola

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Bee - Bee collects nectar from flowers
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Bee

Added year ago by Gosia

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solar butterfly - butterfly, yellow, black, borders
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solar butterfly

Added year ago by wieslawa

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beautiful butterfly - butterfly, colors, patterns, leaf
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beautiful butterfly

Added year ago by wieslawa

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blue butterfly - butterfly, wings, blue, white
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blue butterfly

Added year ago by wieslawa

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butterfly moth - butterfly, night, colors, velvet
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butterfly moth

Added year ago by wieslawa

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butterfly peacock - butterfly, blue, patterns, peacock
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butterfly peacock

Added year ago by wieslawa

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colorful butterfly - butterfly, wings, czułkii, colors
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colorful butterfly

Added year ago by wieslawa

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extremely - three ants on a trip
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extremely

Added year ago by stachura

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Navy butterfly - Navy butterfly. You can do it!
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Navy butterfly

Added year ago by Kinga

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