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Vertebrata Agnatha Pisces - Questions and Answers

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126. Nictitating membrane is useful to Frog in
A. Far sight
B. Short sight
C. Covering and protecting eye ball from mud and water
D. Covering and protecting eye lids from mud and other particles
Explanation:
127. A structure, absent in pisces, has evolved in amphibians
A. Tail
B. Teeth
C. Scales
D. Internal nares
Explanation:
128. Frog has
A. Five fingers and four toes
B. Four fingers and five toes
C. Five fingers and five toes
D. Four fingers and four toes
Explanation:
129. An amphibian lacking tongue is
A. Ichthyophis
B. Necturus
C. Amphiuma
D. Salamandra
Explanation:
130. Mud Eel (Siren lacertina) has
A. Five pairs of both external gills and gill slits
B. Four pairs of both external gills and gill slits
C. Three pairs each of external gills and gill slits
D. Two pairs each of external gills and gill slits
Explanation:
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