NEET BIOLOGY

Detailed explanation-1: -Kingdom Animalia is divided into two distinct groups: vertebrates and invertebrates. Invertebrates are organisms that do not possess a vertebral column, or backbone. Invertebrate phyla include Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Arthropoda, Mollusca, and Echinodermata.

Detailed explanation-2: -Animal kingdom The kingdom Animalia is the most evolved and is divided into two large groups-vertebrates and invertebrates.

Detailed explanation-3: -Flatworms, arthropods, sponges, insects are a few examples of Invertebrates. Mammals, fish, reptiles, amphibians, and birds are examples of Vertebrates.

Detailed explanation-4: -The vast majority of animal species (95 percent) are invertebrates. Among all animal species, one particular group easily claims the highest number of species: the insects. Insects-a group within the phylum Arthropoda-have evolved into several millions of species, particularly beetle insects (order Coleoptera).

Detailed explanation-5: -All animals are members of the Kingdom Animalia, also called Metazoa. This Kingdom does not contain prokaryotes (Kingdom Monera, includes bacteria, blue-green algae) or protists (Kingdom Protista, includes unicellular eukaryotic organisms).