Which sentences are $WRONG$ about acquired reflex action?
$I$. These are non-heritable.
$II$. These are permanent.
$III$. They may disappear or re-appear.
$IV$. Example is knee jerk.

  • A
    $I$ and $II$
  • B
    $II$ and $IV$
  • C
    $III$ and $IV$
  • D
    $I, II$ and $IV$

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The following diagram indicates the reflex arc. Identify the parts labelled as $A, B, C, D, E, F$ and $G$. Choose the correct option.

What is the meaning of a reflex arc in the nervous system?

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