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Question

Sepia is also known as

  1. Modified head    
  2. Modified foot    
  3. Modified mantle    
  4. Modified limbs    

The correct answer is: Modified foot


    arms of Octopus, Sepia and Loligo are

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    An ellipse slides between two perpendicular straight lines x equals 0 blank a n d blank Y equals 0 then, locus of its foci is

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    If there are exactly two points on the ellipse fraction numerator x to the power of 2 end exponent over denominator a to the power of 2 end exponent end fraction plus fraction numerator y to the power of 2 end exponent over denominator b to the power of 2 end exponent end fraction equals 1 whose distance from its centre is same and is equal to square root of fraction numerator a to the power of 2 end exponent plus 2 b to the power of 2 end exponent over denominator 2 end fraction end root then eccentricity of the ellipse is

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    Tangent at any point of ellipse 9 x to the power of 2 end exponent plus 16 y to the power of 2 end exponent minus 144 equals 0 is drawn. Eccentric
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    If the curve x to the power of 2 end exponent plus 3 y to the power of 2 end exponent equals 9 subtends as obtuse angle at the point left parenthesis 2 alpha comma alpha right parenthesis left parenthesis left parenthesis alpha element of text  int  end text text eger end text text end text right parenthesis,blank left parenthesis alpha element of text  int eger  end text right parenthesis then a possible value of is

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    Let Q equals left parenthesis 3 comma square root of 5 right parenthesis comma R equals left parenthesis 7 , 3 square root of 5 right parenthesis . A point P in the XY-plane varies in such a way that perimeter of capital delta P Q R is 16. Then the maximum area of capital delta P Q R is

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    P comma Q blank are points on the ellipse fraction numerator x to the power of 2 end exponent over denominator 25 end fraction plus fraction numerator y to the power of 2 end exponent over denominator 16 end fraction equals 1 such that P Q is a chord through the point R left parenthesis 3 , 0 right parenthesis text  .  end text If vertical line P R vertical line equals 2 then length of chord P Q is

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