NEET BIOLOGY

Detailed explanation-1: -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-2: -Only five percent of all known living animal species are vertebrates or animals with backbones (Fig. 3.3). The vast majority of animal species (95 percent) are invertebrates.

Detailed explanation-3: -Members include the amphibians, reptiles, birds, and mammals.

Detailed explanation-4: -There are currently around 65, 000 known species of vertebrate animals. This sounds like a lot, but vertebrates are only around 3% of all the animals on Earth. Most of the animal species are invertebrates. What are some vertebrate animals?

Detailed explanation-5: -This is by far the largest group in the animal kingdom: 97 percent of all animals are invertebrates. So far, 1.25 million species have been described, most of which are insects, and there are millions more to be discovered.