What are Invertebrates?
Invertebrates are the animals that do not have a backbone or the vertebral column.Animals without the notochord are invertebrates. Most of the animals are invertebrates. The term invertebrates is a prefixed form of a Latin derived word 'Vertebra'. 'Vertebra' means joint in general, specifically it means 'the joint of the spinal column of the vertebrate'. It id coupled with the prefix "in" meaning not or without, which conveys the meaning 'those that lack veterbrae'.
Invertebrates are the most diverse group having about 12 million live species. Most of the animals on earth are invertebrates. They are cold-blooded animals; their body temperature depends on the temperature of the atmosphere.
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