Definitions of Vertebrates versus Invertebrates
Meaning:
- Vertebrates - large group of animals with backbone
- Invertebrates - large group of animals with no backbone
Vertebrates
- these are organisms with a spinal cord or a backbone
- names come from the term "vertebrae" which means backbone
- most advanced type organism
- with advanced nervous system
- with internal skeleton
- with outer covering or protective skin
- more complex organisms
- more advanced organization of body structure
- examples: monkey, dog, human, birds, fish, amphibians
- covers 2% of animal kingdom
- also known as craniata
- most types of their organisms are can be seen by the naked eye
Invertebrates
- organisms with no backbone
- usually small in size
- often microscopic
- lacks well developed skeletal system
- no cell walls
- either has a soft body or a hard covering
- examples: insects,round worm, tape worm, jelly fish, spiders and crabs
- covers 98% of animal kingdom
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