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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
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What are the examples of protochordata?
Examples of Protochordata include Lancelets (Cephalochordata) and Tunicates (Urochordata). These organisms are marine chordates that exhibit characteristics of both invertebrates and vertebrates.
Is hemichordata same as protochordata?
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 notochord is a characteristic of the 9th & 10th division of the kingdom animalia ,i.e., Protochordata and Vertebra
What does hemichordata mean?
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".
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups in animals?
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.
How are the criteria for deciding divisions in plants different from the criteriafor deciding the subgroups among animals?
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.
