Insects are the most diverse group of organisms, in terms of numbers of species, dominating terrestrial habitats. More than 30 orders of insects have been described, with the order Coleoptera being the largest. Classification is based on traits such as wings and mouthparts.

General Characteristics of Phylum Chordata Although not the largest, Chordates are the most diverse phylum in the animal kingdom.

For example, fish belong to the kingdom Animalia, the phylum Chordata, and from there are grouped more specifically into several classes, orders, families, and thousands of genus and species.

Chordates form a phylum of animals that are defined by having at some stage in their lives all of the following anatomical features: A notochord, a fairly stiff rod of cartilage that extends along the inside of the body.

Answer: Amphioxus also known as lancelet is a fish-like marine chordate. Unlike vertebrates, the dorsal nerve cord is not protected by bone but by a simpler notochord made up of a cylinder of cells that are closely packed to form a toughened rod.

Chickens are members of the phylum chordata. Chickens belong to the Class Aves in the chordate phylum which is believed to have descended from dinosaurs.

Chordates (Chordata) are a group of animals that includes vertebrates, tunicates, lancelets. Of these, the vertebrates—lampreys, mammals, birds, amphibians, reptiles, and fishes—are the most familiar and are the group to which humans belong.

Non-vertebrate chordates: Cephalochordata (lancelets), Urochordata (Tunicates), and Myxini (hagfishes) These groups are the chordates which do not possess vertebrae.

Stephen Blake: Elephants do have fantastic memories. So yes, elephants have fabulous memories, and this is one of the things that makes them so special. An elephant’s brain can weigh up to 5 kilograms – larger than any other land animal. It helps store that amazing memory.