Скачать или смотреть Phylum Chordata | Animal Kingdom NCERT reading line by line| class 11 Biology

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👉The phylum chordata has three sub phylums
1. Urochordata/Tunicata
2. Cephalochordata
3. vertebrata

The urochordata and cephalochordata together called protochordates

📝examples of UROCHORDATA
Ascidia
Salpa
Doliolum

📝examples of CEPHALOCHORDATA
Branchiostoma (Amphioxus or lancelet)



👉👉In vertebrates the notochord is replaced by cartilaginous or bony vertebral column

📝Thus all vertebrates are chordates but all chordates are not vertebrates 📝 #vertebrata


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