GENERAL HISTOLOGY

Detailed explanation-1: -Invertebrates: The animals that do not possess backbones are known as vertebrates. These animals are mostly soft-bodied. For example Earthworms, snails, sponges, etc.

Detailed explanation-2: -As invertebrates lack an internal skeletal structure, they sometimes have an external skeleton that protects their soft bodies called an “exoskeleton.” In general, invertebrate success often comes from their ability to reproduce extremely quickly, unlike many vertebrates who take years to become fully grown.

Detailed explanation-3: -An invertebrate is an animal without a backbone. In fact, invertebrates don’t have any any bones at all! Invertebrates that you may be familiar with include spiders, worms, snails, lobsters, crabs and insects like butterflies. However, humans and other animals with backbones are vertebrates.

Detailed explanation-4: -Snails, clams, oysters, and mussels are examples of mollusks. A mollusk has a soft body. Arthropods are animals with jointed legs such as spiders, insects, lobsters, and crabs.

Detailed explanation-5: -Invertebrates do not have backbones. This is the major characteristic that separates invertebrates from vertebrates. Invertebrates have a less complex nervous system. Invertebrates are cold blooded animals. Invertebrates have distinct body parts.