What are Protochordates? | Biology | Sub Phylum of Chordata | Animal Kingdom : Protochordata

Watch More Videos @ http://bit.ly/extraclassapp, http://extraclass.com/

This video will help you to learn What are Protochordates?

What are Protochordates?

What comes to your mind when you hear the term “Chordata”?

Do images of animals with notochord fill your mind?
I guess not but It’s true!!

A chordate is an animal belonging to the phylum Chordata

Chordates possess a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail, for at least some period of their life cycle.

On the basis of the development of notochord, phylum Chordata is classified into two subphylum - Protochordata and Vertebrata.

The members of subphylum Vertebrata possess notochord only during their embryonic stage.

However, the notochord is replaced by a cartilaginous or bony vertebral column in the adult stage

Vertebrates have two, three or four-chambered ventral muscular heart and a pair of the kidney for excretion and osmoregulation.

Examples are birds, reptiles and mammals

On the other hand, members of the phylum protochordate possess notochord throughout their life.

Besides this, they have ventral heart, perforated gill slits, and a post-anal tail.

Protochordate is further divided into three groups which are - Hemichordata, Urochordata, and Cephalochordata.

Thanks for watching this video and don’t forget to like and share these videos with your friends and school mates

Download Extraclass.com app: - Play Store: http://bit.ly/extraclassapp

Follow us on our social media handles to stay updated.

Website – https://www.extraclass.com/
Facebook -   / extraclassofficial  
Instagram -   / extraclassofficial  
Youtube -    / extraclass  
Twitter -   / extraclass_com  
Happy Learning!!
“Thanks for watching”.
#Extraclass
#protochordate
#biology
#neet
#aiims
#cbse
#class9
#icse
#bsc
#phylumchordata
#protochordata
#animalkingdom