86. Cartilagenous fish differ from bony fish in having

1. 1. Uncovered gills

   
   
   

   2. Heterocercal tail

   
   
   

   3. Ventral mouth and nares

   
   
   

   4. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

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87. Sea snake is called

1. 1. Cuttle fish

   
   
   

   2. Devi fish

   
   
   

   3. Hydro fish

   
   
   

   4. Silver fish

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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88. How many chamber is found in the heart of frog

1. 1. 2

   
   
   

   2. 3

   
   
   

   3. 4

   
   
   

   4. 5

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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89. Dengue is transmitted by

1. 1. Culey

   
   
   

   2. Male anophels

   
   
   

   3. Aedes

   
   
   

   4. Female anophels

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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90. Amphibians are the animals that

1. 1. Live in water

   
   
   

   2. Only live on land

   
   
   

   3. Live both on land and water

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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