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Vertebrata Agnatha Pisces - Questions and Answers

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16. Fish vertebrates originated during
A. Devonian
B. Silurian
C. Carboniferous
D. Ordovician
Explanation:
17. Bony fishes are
A. Ammonotelic
B. Ureotelic
C. Uricotelic
D. Both B and C
Explanation:
18. Lateral line occurs in
A. Star fish
B. Jelly fish
C. Dog fish
D. All the above
Explanation:
19. Isinglass (gelatin-like transparent substance) is obtained from
A. Air bladder of fishes
B. Scales of fishes
C. Liver of Frog
D. Cartilage of shark
Explanation:
20. Which are primitive vertebrates?
A. Amphioxus and Herdmania
B. Doliolum and Scoliodon
C. Balanoglossus and Salpa
D. Petromyzon and Myxine
Explanation:
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