BOW Invert Comparassion

Arachnid

 

Arachnids are a class of invertebrates with 8 jointed legs. They have two pairs of appendages used for feeding, defense, and sensory perception. They have pedipals and chelicerae but no antennae nor wings. Their body is organed into two tagmata . The cephalothorax and the abdomen. Arachnids consist of spiders, ticks, scorpions, and ricinulei and more.

Insects

Insects are a class of invertebrates with a chitin exoskeleton that protects them. Insects have six legs. They have three main body parts. These are the head, thorax, and abdomen. They have three pairs of jointed legs. Insects have wings. Their wings are located on their thorax Insects have compound eyes. They have two pairs of antennae. Insects hatch from eggs and there are about 800,00 different types of insects. The insect class consist of ants, grasshoppers, cricket, wasp, and stink bug.

Annelids

 

 Annelids are sometimes called Annelida. They are from a large phylum of segmented worms. There are about 17,00 species. The Annelids consists of rag worms, earthworms, and leeches. They are found marines environments to freshwater environments to terrestrial environments. Annelids have  multiple segments. They have blood circulation within blood vessels. They can produce asexually.


 


http://ecoglitz.com/wp-content/gallery/insect/insects7.jpg
http://media.tiscali.co.uk/images/feeds/hutchinson/ency/1929n005.jpg
http://www.cepolina.com/photo/nature/animals/worm/2/worms_annelid_red_nest.jpg
http://www.earthlife.net/inverts/annelida.html
http://www.everythingabout.net/articles/biology/animals/arthropods/insects/
http://www.everythingabout.net/articles/biology/animals/arthropods/arachnids/