Zoology

What are Phylum Mollusca? Definition of Mollusca (Mollusks) Mollusca, commonly known as mollusks, is a large phylum of invertebrate animals characterized by a soft body that is often protected by a hard shell. This diverse group includes species such as snails, slugs, clams, octopuses, and squids. Mollusks are known for their unsegmented bodies, bilateral symmetry, … Read more

Stratified squamous epithelium Definition Stratified squamous epithelium diagram and Structure Classification of stratified squamous epithelium The stratified squamous epithelium is divided into two classes based on the accumulation of keratin by the cells towards the surface; Keratinized stratified squamous epithelium Non-keratinized stratified squamous epithelium Function of stratified squamous epithelium Stratified squamous epithelium play an important … Read more

Overview of Kingdom Animalia The Kingdom Animalia is a large group of multicellular eukaryotic organisms that are heterotrophic in their nature. They get their food from outside sources. While they cannot create their own food and this is among the most characteristic traits of plant cells, animal cells do not have a cell wall like … Read more

Phylum Chordata Definition “The chordates are a class of animals that have four anatomical characteristics, which are (1) nochord (2) dorsal cord of nerves, (3) post-anal tail and (4) Pharyngeal slits, at the very least, during a portion of their growth into maturity.” Or A phylum within the animal kingdom, which includes all animals that … Read more

Phylum Aschelminthes Definition Aschelminthes are pseudocoelomate. They are bilaterally symmetrical, triploblastic, non-segmented, vermiform, organ-system grade construction that includes full digestive tubes. Characteristics of Phylum Aschelminthes  Classification of phylum Aschelminthes The phylum is a heterogeneous collection of animals, which is why it is classified differently by various Zoologists. The classification here is based on and on … Read more

Definition of Phylum Coelenterata (Cnidaria)  The Coelenterata can be described as a diploblastic metazoa that has a the tissue grade having one nematocyst, and one gastrovascular cavity, or coelenteron. Characteristics of Phylum Coelenterata (Cnidaria)  Classification of Phylum Coelenterata (Cnidaria)  The phylum Coelenterata contains more than 11,000 species of which half are extinct. The classification used … Read more

Definition of Phylum Hemichordata Phylum Hemichordata is a small marine phylum of worm-like animals known as Acorn Worms. They are distinct from chordates and serve as important connecting links between vertebrates and invertebrates. Characteristics of Phylum Hemichordata Phylum Hemichordata exhibits the following characteristics: Some examples of Hemichordata include Balanoglossus, Saccoglossus, Rhabdopleura, Atubaria, and Dendrograptus. In … Read more