Match Column-$I$ with Column-$II$. Select the option with the correct combination.
$1$. Standing state$p$. Mass of living material at a given time
$2$. Pioneer species$q$. Amount of nutrients in the soil at a given time
$3$. Detritivores$r$. Species that invade a bare area
$4$. Standing crop$s$. Breakdown detritus into smaller particles

  • A
    $1-p, 2-s, 3-r, 4-q$
  • B
    $1-q, 2-r, 3-p, 4-s$
  • C
    $1-p, 2-r, 3-s, 4-q$
  • D
    $1-q, 2-r, 3-s, 4-p$

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List-$I$ List-$II$
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