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Select the correct statement from the fo...

Select the correct statement from the following:

A

Mutations are random and directional

B

Darwinian variations are small and directionless

C

Fitness is the end result of the ability to adapt and gets selected by nature

D

All mammals except whales and camels have seven cervical vertebrae

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Knowledge Check

  • In the following question statement 1 represent Assertion and statement 2 represents Reason . Statement 1 : The velocity of a particle at a point on its trajectory is equal to the slope at that point . Statement 2 : The velocity of the particle acts along the tangent to the trajectory at the point . Select the correct statement from the following statements .

    A
    Statement 1 is true, statement 2 is true and it explains statement 1 correctly.
    B
    Statement 1 is true, statement 2 is true and does not explain statement 1 correctly .
    C
    Statement 1 is true, statement 2 is false.
    D
    Statement 1 is false , statement 2 is true .

  • A sphere of radius R is made up of a conducting material and carries a charge Q. Select the correct statements from the following: (i) The electric field is zero inside the sphere. (ii) The electric field is perpendicular to the surface of the sphere. (iii) No work is done to move a charge from one point to another. (iv) Charge Q resides on the surface of the sphere.

    A
    statements (i) and (ii)
    B
    statements (ii) and (iii)
    C
    statements (i) ,(ii) and (iii)
    D
    statements (i) ,(ii),(iii) and (iv)

  • Select the incorrect statement from the following statement:

    A
    A wire carrying current stays electrically neutral.
    B
    A high resistance volt meter is used to measure the emf of a cell.
    C
    A 6000 V power supply must have very high internal resistance.
    D
    A 6V power supply must have very low internal resistance.

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