GENERAL GEOLOGY

Detailed explanation-1: -Invertebrates: The animals that do not possess backbones are known as vertebrates. These animals are mostly soft-bodied. For example Earthworms, snails, sponges, etc.

Detailed explanation-2: -Animals without backbones are called invertebrates. They range from well known animals such as jellyfish, corals, slugs, snails, mussels, octopuses, crabs, shrimps, spiders, butterflies and beetles to much less well known animals such as flatworms, tapeworms, siphunculids, sea-mats and ticks.

Detailed explanation-3: -Inverbrates are animals that lacks a vertebral column, or backbone. More than 90 percent of all living animal species are invertebrates. Some have soft bodies, like worms, slugs and jellyfish.

Detailed explanation-4: -Invertebrates are those organisms that lack a spine or back bone. They evolved before vertebrates and are generally a simpler form of life having a simple notochord or simple nervous system. The support and structure that comes from the backbone come from other structures in invertebrates.

Detailed explanation-5: -The giant squid is the largest invertebrate, or animal without a backbone, ever to have lived on Earth! It can grow up to 60 feet long, so it’s hard to believe that a giant squid has never been seen alive until 2006.