give general characters of phylum chordata and classify labeo with reason
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general characters of phylum chordata are as follows
presence of dorsal hollow nerve cord
pharyngeal Gill slits
post anal tail
presence of notochord
class of labeo is pices
presence of dorsal hollow nerve cord
pharyngeal Gill slits
post anal tail
presence of notochord
class of labeo is pices
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Phylum Chordata
This phylum is probably the most notable phylum, as all human beings and other animals and birds that are known to you, fall under this phylum. The most distinguishing character that all animals belonging to this phylum have is the presence of notochord.
Chordates show four features, at different stages in their life. They are:
Notochord– It is a longitudinal rod that is made of cartilage and runs between the nerve cord and the digestive tract. Its main function is to support the nerve cord. In Vertebrate animals, the vertebral column replaces the notochord.
Dorsal Nerve Cord – This is a bundle of nerve fibres which connects the brain to the muscles and other organs.
Post-anal tail – This is an extension of the body beyond the anus. In some chordates, the tail has skeletal muscles, which help in locomotion.
Pharyngeal slits–They are the openings which connect the mouth and the throat. These openings allow the entry of water through the mouth, without entering the digestive system.

(Source – Lumen Learning)
It will surprise you but this phylum is a very diverse phylum, with about 43,000 species. Most of these organisms can be found in the subphylum Vertebrata. In the animal kingdom, this is considered as the third largest phylum.
Phylum Chordata is again divided into three subphyla. They are:
Urochordata
Cephalaochordata
Vertebrata
The first two phyla have very few species in between them. The major subphylum is Vertebrata, where you come across a variety of fishes, reptiles, birds and animals. Vertebrates have a distinguishing backbone that is made up of bone or cartilage. The bran is enclosed in a skull. There is a proper circulatory system, nervous system and a skeletal system that gives proper shape and support.
Learn more about Phylum Hemichordata here.
Subphylum Vertebrata is further divided into five classes. They are:
Pisces
Amphibia
Reptilia
Aves
Mammalia
Characteristic Features of Phylum Chordata
They are bilaterally symmetrical and triploblastic.
Chordates are coelomate and show an organ system level of organisation.
They have the characteristic notochord, dorsal nerve cord, pharyngeal slits.
Also, they have a post-anal
In this phylum, the nervous system is dorsal, hollow and single.
The heart is ventral, with a closed circulatory system.
The habitat of these animals is widespread. So we can find them in the marine environment, fresh waters as well as terrestrial environments.
Learn more about Phylum Arthropoda here.
Examples
Ascidia, Salpa, Doliolum – Urochordata
Branchiostoma – Cephalochordata
Lizards, fish, frogs, turtles, humans, parrots, elephants, gorillas – Vertebrata

(Source: Wikipedia)
Learn more about Phylum Annelida here.
Solved Examples For You
Q: Can chordates be found in a specific kind of habitat?
Ans: We find Chordates in diverse habitats, including marine, freshwater and terrestrial habitats.
Q: Which subphylum does Branchiostoma belong to?
Ans: Cephalochordata
Q: “All vertebrates are chordates but not all chordates are vertebrates.” Justify
Ans: Vertebrata is a subphylum of Chordata. The vertebrates have a vertebral column, something like the notochord. Vertebrates show all the characteristic features of the phylum Chordata, such as the notochord, dorsal nerve cord, pharyngeal slits and post-anal tail.
But the phylum Chordata also has other two subphyla, called the Urochordata and Cephalaochordata. These are invertebrate animals but show some distinguishing attributes of Chordates, like the presence of notochord. And hence, we can say that all vertebrates are chordates, but not all chordates are vertebrates.
Related Topics
Phylum Chordata
Phylum Arthropoda
Phylum Aschelminthes
Phylum Annelida
Phylum Echinodermata
Phylum Porifera
Phylum Mollusca
Phylum Coelenterata
Phylum Platyhelminthes
Phylum Hemichordata
This phylum is probably the most notable phylum, as all human beings and other animals and birds that are known to you, fall under this phylum. The most distinguishing character that all animals belonging to this phylum have is the presence of notochord.
Chordates show four features, at different stages in their life. They are:
Notochord– It is a longitudinal rod that is made of cartilage and runs between the nerve cord and the digestive tract. Its main function is to support the nerve cord. In Vertebrate animals, the vertebral column replaces the notochord.
Dorsal Nerve Cord – This is a bundle of nerve fibres which connects the brain to the muscles and other organs.
Post-anal tail – This is an extension of the body beyond the anus. In some chordates, the tail has skeletal muscles, which help in locomotion.
Pharyngeal slits–They are the openings which connect the mouth and the throat. These openings allow the entry of water through the mouth, without entering the digestive system.

(Source – Lumen Learning)
It will surprise you but this phylum is a very diverse phylum, with about 43,000 species. Most of these organisms can be found in the subphylum Vertebrata. In the animal kingdom, this is considered as the third largest phylum.
Phylum Chordata is again divided into three subphyla. They are:
Urochordata
Cephalaochordata
Vertebrata
The first two phyla have very few species in between them. The major subphylum is Vertebrata, where you come across a variety of fishes, reptiles, birds and animals. Vertebrates have a distinguishing backbone that is made up of bone or cartilage. The bran is enclosed in a skull. There is a proper circulatory system, nervous system and a skeletal system that gives proper shape and support.
Learn more about Phylum Hemichordata here.
Subphylum Vertebrata is further divided into five classes. They are:
Pisces
Amphibia
Reptilia
Aves
Mammalia
Characteristic Features of Phylum Chordata
They are bilaterally symmetrical and triploblastic.
Chordates are coelomate and show an organ system level of organisation.
They have the characteristic notochord, dorsal nerve cord, pharyngeal slits.
Also, they have a post-anal
In this phylum, the nervous system is dorsal, hollow and single.
The heart is ventral, with a closed circulatory system.
The habitat of these animals is widespread. So we can find them in the marine environment, fresh waters as well as terrestrial environments.
Learn more about Phylum Arthropoda here.
Examples
Ascidia, Salpa, Doliolum – Urochordata
Branchiostoma – Cephalochordata
Lizards, fish, frogs, turtles, humans, parrots, elephants, gorillas – Vertebrata

(Source: Wikipedia)
Learn more about Phylum Annelida here.
Solved Examples For You
Q: Can chordates be found in a specific kind of habitat?
Ans: We find Chordates in diverse habitats, including marine, freshwater and terrestrial habitats.
Q: Which subphylum does Branchiostoma belong to?
Ans: Cephalochordata
Q: “All vertebrates are chordates but not all chordates are vertebrates.” Justify
Ans: Vertebrata is a subphylum of Chordata. The vertebrates have a vertebral column, something like the notochord. Vertebrates show all the characteristic features of the phylum Chordata, such as the notochord, dorsal nerve cord, pharyngeal slits and post-anal tail.
But the phylum Chordata also has other two subphyla, called the Urochordata and Cephalaochordata. These are invertebrate animals but show some distinguishing attributes of Chordates, like the presence of notochord. And hence, we can say that all vertebrates are chordates, but not all chordates are vertebrates.
Related Topics
Phylum Chordata
Phylum Arthropoda
Phylum Aschelminthes
Phylum Annelida
Phylum Echinodermata
Phylum Porifera
Phylum Mollusca
Phylum Coelenterata
Phylum Platyhelminthes
Phylum Hemichordata
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