Onychophora
By Wyatt and Silus
• It belongs to the domain Eukaryote. • The kingdom Animalia.• Believed to be the missing like
between worms and arthropods. • Usually halve grey, brown, blue and
rarely red skin pigments.
• Has a arthropod like hemocyanin. • The hemocyanin takes protein from
oxygen.• Basically the respiratory system is
made of thousands of tiny oddly distributed pits that allows it to breath.
Habitat
• Velvet worms usually live in eastern Australia and New Zeeland.
• They usually live in topical and sub tropical forest areas.
Special abilities
• The shoot out a sticky saliva that traps their victims in a paste that is kind of like super glue so that they can bite off a part of the body and feed.
• They feed by sucking out the undigested juices.
• The slime is also used to trap predators for an escape.
Body features
• They halve a vertical bilateral symmetry that runs from their head to their anus.
• They halve hundreds of tiny claws that allow them to latch on to their prey.
• They also halve thousands of tiny teeth that allow them to bit off a part of their victims to suck out the proteins.
Body features prt. 2
• The claws are used to hook on and stabilize its self when climbing or walking
• The claws are like are feet • It has a velvet textured skin (thus its
name)• It antennas are used for sound like
other animals with antennas
Digestive system
• The digestive track starts right behind the head.• The intestines begin in the throat where our wind
pipes are.• The throat’s sole purpose is to absorb partially
liquefied foods • They halve saliva pallets that lubricate the food to
allow it to pass easily threw its 1 intestine • The intestine consists only of a single layer of
epithelial tissue • Witch means that it doesn’t halve a outer layer
of skin around the intestine (unlike humans)
Interaction
• Interaction with a velvet worm is very unlikely to come in contact with unless you live in Australia or are visiting Australia
Phylogeny (history)
• Has been date bake to the Cambrian period
• They have been believed to halve evolved form the same ancestor as arthropods
• The ancestor had characteristics or each one
Bibliography • http://www.bumblebee.org/invertebrates/ONYCHOPHORA.htm
• http://www.pnas.org/content/99/16/10545.full
• http://www.britannica.com/EBchecked/topic/624996/velvet-worm
• http://www.austmus.gov.au/factSheets/velvet_worms.htm
• http://animals.jrank.org/pages/1723/Velvet-Worms-Onychophora-BEHAVIOR-REPRODUCTION.html
• http://www.absoluteastronomy.com/topics/Velvet_worm
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