NEET BIOLOGY

Detailed explanation-1: -Invertebrates can have a skeleton outside their bodies called an exoskeleton, while some invertebrates have no skeleton at all! In fact, the majority of animals on Earth are invertebrates. Mammals, reptiles, birds, fish and amphibians are vertebrates with endoskeletons (skeletons inside their bodies).

Detailed explanation-2: -An invertebrate is a cold-blooded animal with no backbone. Invertebrates can live on land-like insects, spiders, and worms-or in water. Marine invertebrates include crustaceans (such as crabs and lobsters), mollusks (such as squids and clams), and coral.

Detailed explanation-3: -Animals without a backbone are called invertebrates. Most animals are invertebrates. In fact, 95% of all living creatures on Earth are invertebrates. make up a large part of this group.

Detailed explanation-4: -Invertebrate skeletons. Invertebrates are defined by a lack of vertebral column, and they do not have bone skeletons. Arthropods have exoskeletons and echinoderms have endoskeletons. Some soft-bodied organisms, such as jellyfish and earthworms, have hydrostatic skeletons.