1 . The animals are bilaterallysymmetrical , triploblastic and have coelem .
2 . They have a notochord , at least some stages during their lives . The notochord run along the back of the animal separating the nervous tissue from the gut . It provides support and a place for muscles to attach .
3 . Protochordates are marine animals . Examples are Balanglossus , Herdemania , Amphioxus , etc
Examples of protochordata are Balanoglossus,Herdmania and Amphioxus.
No, hemichordata and protochordata are not the same. Hemichordata is a phylum of marine deuterostome animals, while Protochordata is a subphylum of chordates that includes organisms like tunicates and lancelets. Both groups are primitive chordates but belong to different taxonomic classifications.
The notochord is a characteristic of the 9th & 10th division of the kingdom animalia ,i.e., Protochordata and Vertebra
Protochordata is a subphylum within the phylum Chordata. It includes three groups: Hemichordata, Urochordata (Tunicata), and Cephalochordata. These organisms exhibit some characteristics of chordates, such as a notochord and dorsal hollow nerve cord, but lack some of the defining features found in more advanced chordates like vertebrates.
same as protochordata ----------------------------------------------------------------------------------------- The hemichordata are a a small phylum of marine invertebrates that have a vertebrate like hollow nerve cord and an echinoderm like larval stage. The "hemi" prefix means "half".
Criteria for deciding divisions in plants are:(i) Differentiated/ Undifferentiated plant body(ii) Presence/ absence of vascular tissues(iii) With/without seeds(iv) Naked seeds/ seeds inside fruitsCriteria for deciding subgroups among animals are:Kingdom Animalia is divided into two major groups on the basis of the presence or absence of a notochord.Non-chordates do not possess a notochord, while all members of the phylum chordates possess a notochord.Non-chordate is further divided into subgroups on the basis of the following features:On the basis of the above features, non-chordates are divided into the following subgroups: Porifera, Coelenterate, Platyhelminthes, Nematodes, Annelids, Molluscs, Arthropoda, and Echinodermata.All members of the phylum chordate possess a notochord. However, some animals such as Balanoglossus, Amphioxus, Herdmania,etc. have a notochord, which is either absent or does not run the entire length of the animal's body. Therefore, these animals are kept in a separate sub-phylum called Protochordata, and the rest of the chordates are included in the sub-phylum vertebrata. The members of the sub-phylum vertebrata are advanced chordates. They are divided into five classes: Pisces, Amphibian, Reptilia, Aves, and Mammalia.
Criteria for deciding divisions in plants are:(i) Differentiated/ Undifferentiated plant body(ii) Presence/ absence of vascular tissues(iii) With/without seeds(iv) Naked seeds/ seeds inside fruitsCriteria for deciding subgroups among animals are:Kingdom Animalia is divided into two major groups on the basis of the presence or absence of a notochord.Non-chordates do not possess a notochord, while all members of the phylum chordates possess a notochord.Non-chordate is further divided into subgroups on the basis of the following features:On the basis of the above features, non-chordates are divided into the following subgroups: Porifera, Coelenterate, Platyhelminthes, Nematodes, Annelids, Molluscs, Arthropoda, and Echinodermata.All members of the phylum chordate possess a notochord. However, some animals such as Balanoglossus, Amphioxus, Herdmania,etc. have a notochord, which is either absent or does not run the entire length of the animal's body. Therefore, these animals are kept in a separate sub-phylum called Protochordata, and the rest of the chordates are included in the sub-phylum vertebrata. The members of the sub-phylum vertebrata are advanced chordates. They are divided into five classes: Pisces, Amphibian, Reptilia, Aves, and Mammalia.