11. Assertion (A) : In the deep ocean, primary production occurs near hydrothermal vents.
    Reason (R) : Over there, microbes produce food through chemosynthesis which forms the basis for a food-chain.
    Code

1. 1. Both (A) and (R) are individually true and (R) is the correct explanation of (A)

   
   
   

   2. Both (A) and (R) are individually true but (R) is not the correct explanation of (A)

   
   
   

   3. (A) is true but (R) is false

   
   
   

   4. (A) is false but (R) is true

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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12. Match List - I (Ridges) with List - II (Oceans) and select the code given below the lists
    

    	List - I		List - II
    F.	Mendelevav	1.	North Atlantic Ocean
    G.	Kerguelen	2.	South Atlantic Ocean
    H.	San Felix-Juan	3.	Arctic Ocean
    J.	Walvis	4.	Indian Ocean
    		5.	South Pacific Ocean

    Code :

    	F	G	H	J
    A.	5	4	1	2
    B.	3	2	5	4
    C.	5	2	1	4
    D.	3	4	5	2

1. 1. A.

   
   
   

   2. B.

   
   
   

   3. C.

   
   
   

   4. D.

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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13. Assertion (A) : A composite profile includes only the lowest parts of a series of parallel profiles.
    Reason (R) : A composite profile is constructed to represent the overall relief of an are a as viewed from a distance.
    Code

1. 1. Both (A) and (R) are individually true and (R) is the correct explanation of (A)

   
   
   

   2. Both (A) and (R) are individually true but (R) is not the correct explanation of (A)

   
   
   

   3. (A) is true but (R) is false

   
   
   

   4. (A) is false but (R) is true

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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14. Assertion (A) : Tropical seas in India are rich in fish species but there are few important fishing ground around the country.
    Reason (R) : The quantity of fish of a particular species in lacking and hence not commercially exploitable.
    Code

1. 1. Both (A) and (R) are true and (R) is the correct explanation of (A)

   
   
   

   2. Both (A) and (R) are true but (R) is not the correct explanation of (A)

   
   
   

   3. (A) is true but (R) is false

   
   
   

   4. (A) is false but (R) is true

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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15. Following relief zones are characteristics of ocean basins
    1. Continental slope
    2. Continental shelf
    3. Deep sea plain
    4. Oceanic trench
    The correct sequence of their seaward appearance from the codes is
    

1. 1. 2,1,4,3

   
   
   

   2. 1,2,4,3

   
   
   

   3. 2,1,3,4

   
   
   

   4. 1,2,3,4

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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