Class Myxini and Cephalaspidomorphi
Tail fin with upper lobe is called:
heterocercal tails
urochorda
chorda
endocotyl
heterocercal tails
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Sucking mouth with teethes and rasping tongue is characteristics of classA. myxini
B. cephalochordata
C. cephalaspidomorphi
D. Chondrichthyes
Number of pharyngeal slits in class cephalaspidomorphi is:
A. 2 pairs
B. 7 pairs
C. 5 pairs
D. 4 pairs
Time duration for larval stages of lamprey is:
A. 2 months
B. 3 months
C. 3 years
D. 1 month
How many numbers of pharyngeal slits in members of class myxini?
A. 3-15 pairs
B. 2-10 pairs
C. 5-15 pairs
D. 5-20 pairs
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