NEET BIOLOGY

Detailed explanation-1: -Invertebrates are animals without a backbone or bony skeleton. They range in size from microscopic mites and almost invisible flies to giant squid with soccer-ball-size eyes. This is by far the largest group in the animal kingdom: 97 percent of all animals are invertebrates.

Detailed explanation-2: -An invertebrate is an animal without a backbone. In fact, invertebrates don’t have any any bones at all! Invertebrates that you may be familiar with include spiders, worms, snails, lobsters, crabs and insects like butterflies. However, humans and other animals with backbones are vertebrates.

Detailed explanation-3: -95% of animal species are invertebrates. 5 % of animal species are vertebrates. Flatworms, arthropods, sponges, insects are a few examples of Invertebrates. Mammals, fish, reptiles, amphibians, and birds are examples of Vertebrates.

Detailed explanation-4: -Invertebrates have no bones. True. Instead, many invertebrates are supported by exoskeletons, while those that live in the sea are often supported by a fluid–filled cavity surrounded by muscles. This is called a hydrostatic skeleton.