These pores are termed as Ostia, through which water enters the body of sponges. Non Chordates (Invertebrata) 1. Question 11. Their heart is also dorsal in position. Page no: 43-73. Their digestive system consists of a gut with two openings, the mouth and the anus. Among all 5000 species of Poriferans, 150 species live in freshwater while the remaining are marine organisms. Animal Kingdom. They are commonly called sponges. c. Explanation. All the turtles, crocodiles, lizards and snakes of the earth come under this classification of animals called reptiles. The animals belonging to the phylum: Coelenterata is identified as Cnidaria. Malpighian tubule is the excretory organ of which phylum? The members of this group are characterised with pharyngeal gill slits and hollow nerve cord. Basically amphibians are the animals that live both on land and in water and are considered to have a “double life”. Page no: 46-62. Porifera is a term, which merely refers as pore bearers that include “Poriferans” or pore bearing animals. The nervous system of arthropods consists of paired ganglia (simple brain) connected to a ventral double nerve cord. CLASSIFICATION OF PORIFERA. Up till now, there are almost 30 animal … Classification of phylum “Porifera” is on the basis of skeletal elements. These are primitive, multicellular, asymmetrical, marine animals with cellular level of organisation. Non – Chordates and Chordates. Their organ of locomotion is a muscular foot; however in many species the movement is slow. Vedantu academic counsellor will be calling you shortly for your Online Counselling session. Poriferans show cellular aggregate level of organization- the cells are grouped into an aggregation. Humans too are chordates. All members of Porifera range in size from a few millimeters wide to more than one meter tall. This phylum includes lowest of multicellular animals commonly called sponges. ), which form only two embryonic tissue layers (diploblastic development). In … Circular and longitudinal muscles in the body wall help in the locomotion. Answer (4) Poriferans are sessile organisms and remain attached to substratum. Digestive system is in the form of an alimentary canal which has two openings, mouth and anus. The word “Porifera” mainly refers to the pore bearers or pore bearing species. Members of phylum Porifera, Coelenterata, Ctenophora, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata and Hemichordata fall under Non-chordates. SECTION - B Objective Type Questions 1. b) In some animals, the presence of chordate can be found in the entire body, from head to tail; where as in some animals it is present only in the parts of their larval tail. About 10,000 species of sponges are present today. Respiration occurs by ill-slits forming a dorsal row behind the collar. Specialized polyps in the coelenterates form coral reefs. a) They are basically pseudocoelomate, coelomate, triploblastic or cylindrical animals. The main difference between chordates and non-chordates is that chordates are the animals with backbone whereas non-chordates are the animals without a backbone. Mr Lesiuk Biology Biology 11 Unit Seven. Phylum PORIFERA. d. None. Chordates are a group of animals that includes the vertebrate, together with several closely related invertebrates. PHYLUM PORIFERA. These cells give rise to another type of cell-nematocysts, which are the stinging structures. It is hollow and its wall is supported with a skeleton of spicules , fibres or of both and contains many pores … Chordata: Animals that have the notochord persistent or at some phase of their life. Phylum – Chordata; Phylum – Porifera. Cnidaria – Aurelia, Hydra, etc. They are primitive multicellular animals and have cellular level of organisation. Branched colonial sponge having vase - shaped individuals. Excretion occurs with the help of specialized structures called nephridia. They are: 1. They possess a well-developed circulatory and digestive system. The circulatory and respiratory systems are absent. General characteristics of Phylum Porifera. An animal phylum (plural: phyla) is a high-level taxonomic group, describing a group of species sharing a phylogenetic relationship based on common ancestry. In general, chordates and non chordates are distinguished based on the presence and absence of a notochord. A well-developed central nervous system is present consisting of a simple brain and a solid double, longitudinal, ventral nerve cord. They are non-motile animals attached to some solid support. There is no definite nervous system in Poriferans. They reproduce predominantly by asexual means (budding) however sexual reproduction is also observed in some coelenterates. The word “arthron” means joint whereas “pods” means feet. Non-chordates are animals lacking a Notochord. These have been discussed in details in the following heads. Lost your password? • Study of Paramecium with particular reference to locomotion, Osmoregulation and reproduction. The amphibians are generally not able to generate the temperature of their bodies and their skin types limit the distribution of their residence from moist to warm climates. The general characteristic features of Non-Chordates are : They are cylindrical, triploblastic, coelomate, or pseudocoelomate animals. The Phylum Porifera consists of some of the earliest known animals. Class Aves has got almost 9, 000 species altogether. 4.2.1 Phylum – Porifera Members of this phylum … the ectoderm, mesoderm and endoderm. Animal bodies that are featured with the presence of notochord during any point of their life span are termed as the chordates. Therefore, non-chordates do not possess a vertebral column and are termed as invertebrates. 4. They have an open circulatory system and haemocoel serves as a circulatory fluid. Phylum : Porifera or sponges. Some of the very common examples of phylum are Saccoglossus and Balanoglossus. Phylum Porifera; Phylum Echinodermata; Phylum Annelida; Phylum Aschelminthes; Phylum Arthropoda; Download Animal Kingdom Cheat Sheet Below. Coelenterates are found in two basic forms: They have alternation of generation in their life cycle. The members of this phylum are aquatic, mostly marine, sessile or free-swimming, radially … 1. (1) Cockroach, locust, molluscs (2) Non-cephalopod molluscs, cockroach (3) … They occur either as free living or parasitic. The invertebrates, or invertebrata, are animals that do not contain bony structures, such as the cranium and vertebrae.The simplest of all the invertebrates are the Parazoans, which include only the phylum Porifera: the sponges (Figure 1).Parazoans (“beside animals”) do not display tissue-level organization, although they do have specialized cells that perform specific functions. Chordates have a prominent notochord, whereas non chordates do not have a notochord. Asconoid canal system, larva is parenchymula . Body cavities are present in coelenterates. These appendages are modified to perform locomotion. Some Cnidarians are sessile whereas others are free-swimming. The phyla Porifera and Coelenterata represent the non-chordates. Characteristic Features of Phylum Chordata . Human beings, Koala, cow etc are considered to be included in this category. Leucosolenia. They have a segmented body and exhibit bilateral symmetry. It includes earthworms, flatworms, sponges, jellyfish, cockroaches, etc. They display an organ level of organization. Class - Calcarea. Non-chordates is: a. Porifera to Platyhelminthes. Chordate - Chordate - Internal features: The chordate notochord is a stiff rod with a turgid core and fibrous sheath. structure are called non-chordates, e.g., porifera to echinoderms. They have sensory structures in the form of sensory papillae which are present on the mouth end. The phylum chordata is a very diverse phylum which … Respiration occurs by simple diffusion through the body surface. It is believed that if an animal gets a notochord at point of its life, then it will be considered as a chordate. Answer (3) Only phylum aschelminthes are pseudocoelomate animals where body cavity is present but it is not completely lined by mesoderm, but mesoderm is present as scattered pouches between ectoderm and endoderm. Chordates and NonChordates (Phylum Porifera - Phylum Echinodermata) Kingdom Animalia are divided into two major groups, viz., the non chordates and chordates. Chordate, any member of the phylum Chordata, which includes the vertebrates, the most highly evolved animals, as well as two other subphyla—the tunicates and cephalochordates. Repeaters, Vedantu There are approximately 5000 species in a phylum Porifera. Essentially, this phylum includes the animals like marine species as well as the members of the phylum Porifera, Hemichordata, Echinodermata, Mollusca, Arthropoda, Annelida, Aschelminthes, Platyhelminthes, Ctenophora and Coelenterata. Non chordate animals belongs to porifera, Coelenterates, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca,echinodermata and hemichordata. Non-Chordata: Animals that do not have the notochord. Ellias placed sponges among animals. Ans: Examples of the non-chordates are present in the phylum including Porifera, Cyonopera, Platyhelminthes, Aschelmenthis, Cyonophera, Annelida, Mollusca, Echinodermata, Hemichordata and Arthropoda. Non chordata includes a number of phyla.The major ones are Porifera, Coelenterata, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca and Echinodermata. Books on Non-Chordata Phylum Porifera is placed in the kingdom Animalia, whose members are metazoans having a cellular organization. Body shape can be cylindrical, vase-like, rounded or sac-like. They are diploblastic animals with two layers, the outer dermal layer and the inner gastral layer. Excretion occurs with the help of paired nephridia. Sponges consist of one or more large openings, the oscula by which the water exists. Even the nerve chord which is present, is double, bearing ganglia and ventrally present, their heart is also dorsal in position. Class Pisces (Fishes) has the most diverse and wide variety of vertebrates. Ascaris has all of the following … Echinoderms are triploblastic coelomates and possess radial symmetry. Ranging to almost 3, 900 species; this class of animals consists of caecilians, toads, frogs and salamanders etc. Notochord– It is a longitudinal rod that is made of cartilage and runs between the nerve cord and the diges… Chordates include hemichordate and chordates. Coelenterata consists of aquatic animals found in marine as well as in freshwater habitats. Canal system and affinities. b. Porifera to annelids. The members included in this category are further categorised based on some specific features into various Genus, Family, Order, Class and phyla. Some of these non-chordates are marine animals. Pro Lite, NEET In the evolutionary course, They acquired new novelties and became vertebrates that were radiated on all ecological niches and became strong rivals of the non-chordates in the course of time. The animals in the phylum: Porifera are usually called sponges. Phylum PORIFERA. They possess a cylindrical and unsegmented body. All organisms from phylum porifera to phylum hemichordata are referred to as non-chordates. The pores and channels allow the circulation of water. b) Usually their body holds a circulatory system, open in form. Platyhelminthes. Phylum Porifera Classification of Animals Non Chordates of Class 11. Notochord is formed on dorsal side in chordate while nerve cord is ventral in non-chordates and dorsal in chordates. The animals included in this phylum have an elongated, cylindrical, worm like body with pointed ends. The Phylum Porifera include more than 5000 animal species, mostly marine, but includes about 150 fresh water inhabitants also. Organisms like Sponges are filter feeders and have been shown to be capable of catching about 70 percent of … The gastro-vascular cavity in coelenterates acts as digestive as well as the body cavity. The phyla Porifera and Coelenterata represent the non-chordates. They are bilaterally symmetrical and triploblastic. It is the key difference between chordates and non chordates. The body design involves very minimal differentiation and division into tissues. They possess a tissue level of organization. Animals that do not have the rod – like structure called the notochord in their body are termed as non – chordates. Question 12. In sea they occur up to a depth of 8,500 m and mostly flourish in warm waters. Notochord (Gr., noton=back, L., chorda=cord) is a cartilagenous string or rod like stucture present along the back of chordates, at some stage of their life. Notochord is a rod-like elastic structure which gives rise to the vertebral column. Chordates show four features, at different stages in their life. Non-chordates. They lack a respiratory system; exchange of gasses occurs through the body surface. There are over 5,000 known species of echinoderms. They are mostly marine animals and may live solitary or in the form of colonies. Excretion and respiration occurs through simple diffusion. Some representatives of phylum - Porifera Classification of Animals Non Chordates of Class 11. They have a closed circulatory system with a heart and two vessels. Hemichordata Earlier, Phylum Protozoa was also included under Animal kingdom, but since, they are microscopic unicellular organisms, now a days it is studied under the phylum Protista. Animal Diversity (Non-Chordata) THE NON-CHORDATES. These are the cold blooded and bipedal feathered animals, able to maintain a constant temperature range of their body. They have an organ level of organization. ANIMAL DIVERSITY (NON-CHORDATA) > Classification of Porifera. Phylum: Porifera (L. poros-pore; ferre-to bear) These pore bearing animals are commonly called sponges. The members of this phylum are known as sponges. 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