A) Protochordata
B) Protochordata and cyclostomata
C) Amphioxus and Balanoglossus
D) Herdmania and Myxine
Correct Answer: B
Solution :
[b] Jaws are absent in protochordata and cyclostomata. Protochordata refers to invertabrate subphylum of phylum chordata. It includes animals such as tunicates. Cyclostomata is a class of group agnatha, where paired appendages, girdles and jaw are absent.
You need to login to perform this action.
You will be redirected in
3 sec
