wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Based on the occurrence of the notochord, chordates are subdivided into ___________________ & ____________________.


A

Vertebrates & Invertebrates

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

Non-chordates & Chordates

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

Protochordata & Vertebrata

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

Vertebrata & Invertebrata

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C

Protochordata & Vertebrata


Based on the occurrence of the notochord, chordates are subdivided into protochordata and vertebrata. Protochordata includes the primitive chordates, and includes two sub-phyla: Urochordata (or tunicata) and Cephalochordata. In Urochordata, notochord is present only in the larval tail, while in Cephalochordata, it extends from the head to tail region, and is persistent throughout the animal's life. The members of sub-phylum Vertebrata possess notochord during the embryonic period. The notochord is replaced by a cartilaginous or bony vertebral column in the adult. Vertebrata is the sub-phylum that includes fishes, amphibians, reptiles, birds and mammals.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Phylum Chordata
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon