Biology

Differences between the Prokaryotic cell and Eukaryotic cell: Prokaryotic Cell Size and structure: Very minute and simple Nucleus: Only DNA is present nuclear membrane nucleolus…

Prokaryotic Cell: The type of cells that do not have a well-organized nucleus, nuclear membrane, and nucleolus and undergo amitosis division is said to be…

Somatic cells and Reproductive Cells are two types of cells which are implicated in asexual and sexual reproduction of organisms, correspondingly. Somatic cells can be…

Phylum Platyhelminthes have dorso-ventrally flattened body, hence are called flatworms (Figure). These are mostly endoparasites found in animals including human beings. Flatworms are bilaterally symmetrical.…

Phylum Ctenophora or Ctenophores commonly known as sea walnuts or comb jellies are exclusively marine, radially symmetrical, diploblastic organisms with tissue level of organization. The…

Phylum Coelenterata are aquatic, mostly marine, sessile or free-swimming, radially symmetrical animals (Figure). The name cnidaria is derived from the cnidoblasts or cnidocytes (which contain the…

Members of phylum porifera are commonly known as sponges. They are generally marine and mostly asymmetrical animals (Figure). These are primitive multicellular animals and have cellular level…

Notochord is a mesodermally derived rod-like structure formed on the dorsal side during embryonic development in some animals. Animals with notochord are called chordates and…

Presence or absence of a cavity between the body wall and the gut wall is very important in classification. The body cavity, which is lined…

Diploblastic: Animals in which the cells are arranged in two embryonic layers, external ectoderm, and internal endoderm, are called diploblastic animals, for example, coelenterates. An…