Porifera to echinoderms are non-chordates. Some Cnidarians are sessile whereas others are free-swimming. Similarly, Non-chordates are the animals those don't have notochord at any stage of their life. Comparison Chart: Chordates vs Non-Chordates . Animal Kingdom. For the best answers, search on this site https://shorturl.im/axPTz. Phylum Porifera; Phylum Echinodermata; Phylum Annelida; Phylum Aschelminthes; Phylum Arthropoda; Download Animal Kingdom Cheat Sheet Below. the ectoderm, mesoderm and endoderm. Pro Subscription, JEE Vertebrates are generally classified broadly into 7 different parts that includes the following: Vertebrates ➨  a) Mammals (Class Mammalia), h) Cartilaginous fishes (Class Chondrichthyes). An animal phylum (plural: phyla) is a high-level taxonomic group, describing a group of species sharing a phylogenetic relationship based on common ancestry. They lack a nervous and a circulatory system. General Features: These are commonly referred to as sponges. The body surface is perforated due to the presence of numerous pores. They possess a tissue level of organization. A phylum of aquatic invertebrate animals that comprises the sponges. The gastro-vascular cavity in coelenterates acts as digestive as well as the body cavity. Non Chordates are classified further into phyla: Porifera – Sponges belong to this group. The excretory system of platyhelminthes consists of branching tubes having bulb-like cells at the ends called flame cells. They lack tissue organization and have no organs. The boy of mollusks is divided into a head, visceral mass, muscular foot and mantle. Their body wall is formed of an outer layer and inner layer and enclose a hollow body cavity known as spongocoel. The members included in this category are further categorised based on some specific features into various Genus, Family, Order, Class and phyla. Euplectella … Grade of organization: cellular grade of body Shape: Body shape is variable, mostly cylinder shaped Symmetry: Asymmetrical or radially symmetrical. The nervous system of arthropods consists of paired ganglia (simple brain) connected to a ventral double nerve cord. These cells give rise to another type of cell-nematocysts, which are the stinging structures. They are diploblastic animals with two layers, the outer dermal layer and the inner gastral layer. Please enter your username or email address. Members of phylum porifera are considered as parazoa , due to the presence of cellular grade of the body organisation and lack of tissue grade of the body pattern. It is believed that if an animal gets a notochord at point of its life, then it will be considered as a chordate. They have a closed circulatory system with a heart and two vessels. Non-chordates includes the phyla like Porifera, Coelenterata (Cnidaria), Ctenophora, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata. Their reproduction is metazoan type with freely swimming, ciliated amphiblastula, stomoblastula and parenchymula larvae. It is the key difference between chordates and non chordates. Most sponges prefer relatively shallow water, but some groups including most glass sponges, live in deep water. PORIFERA CLASSIFICATION. The presence or absence of notochord on the animal body is one of the fundamental means of animal classification. Leucosolenia. General Characters. Locomotion in nematodes occurs through undulating waves of contraction and relaxation. There is a gelatinous, non-cellular mesoglea, in between these two layers. What is Porifera Porifera contains pore bearing animals, who are usually called sponges. 1. Chordates include hemichordate and chordates. b) Usually their body holds a circulatory system, open in form. The limbs in the front side of their body are shaped as wings and most of the animals of this class are able to fly high in the sky, although there are a few exceptions as well. Non-chordates are animals without a notochord – the rod-like elastic structure that supports the body. Most of them live in seas and oceans and few live in fresh water , They live individually ( solitary ) or in colonies attached to rocks , They are immobile , It is simple structured , Its shapes are varied where it may be tubular or vase-shaped . Canal system of porifera is not connected with (1) Food gathering (2) Respiratory gas exchange (3) Removal of waste (4) Locomotion Sol. Nearly all (about 99 percent) cnidarians are marine species. Non – Chordates and Chordates. 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