NEETBotanyAnimal Kingdom
Match List-I with List-II regarding the fate or presence of the notochord. List-I List-II A. Urochordata (i) Notochord is replaced by a cartilaginous or bony vertebral column in the adult B. Cephalochordata (ii) Notochord is present only in the larval tail C. Vertebrata (iii) Notochord extends from head to tail region and is persistent throughout life D. Hemichordata (iv) Notochord is absent, but a rudimentary stomoc
Options
- AA-(iii), B-(ii), C-(i), D-(iv)
- BA-(ii), B-(iv), C-(iii), D-(i)
- CA-(iv), B-(iii), C-(ii), D-(i)
- DA-(ii), B-(iii), C-(i), D-(iv)
Correct answer
D. A-(ii), B-(iii), C-(i), D-(iv)
Step-by-step solution
According to NCERT: - In Urochordata, the notochord is present only in the larval tail (A-ii). - In Cephalochordata, it extends from head to tail region and is persistent throughout life (B-iii). - In Vertebrata, the notochord is present during the embryonic period and is replaced by a cartilaginous or bony vertebral column in the adult (C-i). - Hemichordata was earlier considered a subphylum under Chordata, but it is now a separate phylum of non-chordates. They lack a true notochord and instead have a rudimentary