The primary difference between vertebrates and invertebrates is the presence of a backbone or spinal column, which vertebrates have and invertebrates do not. Examples of vertebrates are humans, dogs, cats and birds. Examples of invertebrates are flatworms, mollusks, sea urchins and insects.Know More
Vertebrates have a well-developed internal skeleton, an outer covering of protective cellular skin, an advanced nervous system and a highly developed brain. On the other hand, invertebrates are heterotrophic and multicellular, have no cell walls and have no backbone. The characteristics that differentiate vertebrates from their counterparts are their backbones, vertebrae and notochords.
Vertebrates are typically large in size because they have a versatile support system that enables them to develop more quickly. Invertebrates are mostly small and slow in movement. They do not have effective ways to support a big physique or the muscles needed to power a large body. Vertebrates are classified into five different groups: mammals, amphibians, fish, birds and reptiles. Invertebrates are classified into 30 phyla.
Only two percent of animal species are vertebrates, and the remaining 98 percent are invertebrates. Both live in a vast array of habitats, but vertebrates are more capable of adapting to all habitats, including land, air and sea. Vertebrates have a well-developed nervous system that enables them to react swiftly to environmental changes, but invertebrates have simple nervous systems that allows them to behave by instinct.Learn more about Zoology
According to the University of Arizona, butterflies belong to the phylum Arthropoda and subsequently classify as invertebrates. Butterflies are insects that go through three stages of development: larva, pupa and adult. Each stage of development is preceded by a series of molts.Full Answer >
All vertebrates, segmented worms, such as earthworms, and cephalopods, such as squid, have closed circulatory systems. Closed circulatory systems allow larger animals to be much more active than those with open circulatory systems, which are relatively inefficient in delivering oxygen to the organs and muscles.Full Answer >
Most animals without backbones, known as invertebrates, have no tails. Among these are spiders, most insects and frogs. However, every species of mammal has a tail at some point in its development. Human embryos possess tails during their fifth to eighth week of development. In rare cases, humans are born with imperfectly developed tails, which must be removed by surgery.Full Answer >
Animals that do not have bones are called invertebrates. Invertebrates include many different species of animals, such as jellyfish, slugs, snails, corals, mussels, crabs and lobsters and butterflies. Although these animals vary widely in physical characteristics, they share the common feature of not having any bones.Full Answer >