What fish are in the class Osteichthyes?
Class Osteichthyes comprises bony fishes under the superclass Pisces. Also Check: What Replaces Most Of The Cartilages In Vertebrate Embryos?... View Article
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Why are Cyclostomes called Agnatha?
Cyclostomes are classified under the division Agnatha because they lack jaws. Also Check: What Replaces Most Of The Cartilages In... View Article
Which chordate has a notochord and nerve cord but no backbone?
Cephalochordates have a notochord extending from the head to the tail region and persist throughout their life. They also have... View Article
Does Agnatha have teeth?
Agnatha has rows of teeth in their round muscular mouth. They lack jaws. Also Check: What Replaces Most Of The... View Article
Do chordates have a 4 chambered heart?
No, not all chordates have a 4-chambered heart. Birds and Mammals have a 4-chambered heart. Also Check: What Replaces Most... View Article
Do all vertebrates have jaws?
No, the division Agnatha lacks jaw, i.e. jawless fish, e.g. Cyclostomata- Petromyzon, Myxine Also Check: What Replaces Most Of The... View Article
What are the 3 chordate clades?
Chordates are divided into three subphyla, viz., Urochordata, Cephalochordata and Vertebrata. Also Check: What Replaces Most Of The Cartilages In... View Article
What is the difference between Hemichordata and Chordata?
Hemichordates have a rudimentary notochord only in the collar region called stomochord. Also Check: What Replaces Most Of The Cartilages... View Article
Is Cephalochordata a class?
Cephalochordata is a subphylum under the phylum Chordata. Also Check: What Replaces Most Of The Cartilages In Vertebrate Embryos? Why... View Article
What is the function of Atriopore in Urochordata?
Atriopore is the opening in urochordates from where water is removed from the body. Also Check: What Replaces Most Of... View Article
Is Urochordata a class?
Urochordata is a subphylum under the phylum Chordata. Also Check: What Replaces Most Of The Cartilages In Vertebrate Embryos? Why... View Article
What animals are in Urochordata?
Urochordates are also called tunicates. Examples of Urochordata are Ascidia, Salpa, Doliolum, etc. They are exclusively marine. Also Check: What... View Article
Why are Urochordata and Cephalochordata called Protochordata?
Urochordata and Cephalochordata are called protochordate as they are the primitive or ancestral forms of chordates. Also Check: What Replaces... View Article
Is notochord present in Urochordata?
Yes, the notochord is present in Urochordata but only in the larval tail. Also Check: What Replaces Most Of The... View Article
What are the characteristics of Urochordata?
The characteristic feature of Urochordata is the presence of notochord only in the larval tail. Also Check: What Replaces Most... View Article
What is the function of pharyngeal slits?
Pharyngeal slits help in filter-feeding and respiration. Also Check: What Replaces Most Of The Cartilages In Vertebrate Embryos? Why are... View Article
What does notochord become in humans?
Notochord is replaced by the vertebral column in humans. Also Check: What Replaces Most Of The Cartilages In Vertebrate Embryos?... View Article
When can a notochord be seen in humans?
In humans, the notochord is present during the embryonic period. Also Check: What Replaces Most Of The Cartilages In Vertebrate... View Article
Why are animals named as vertebrates?
Animals are referred to as vertebrates because of the presence of the vertebral column. Also Check: What Replaces Most Of... View Article
Are Protochordates and Hemichordata same?
No, Hemichordata is the separate phylum, whereas Protochordates comprises the subphylum Urochordata and Cephalochordata under the phylum Chordata. Also Check:... View Article
