The optimum temperature preferred for plant growth is

  • A
    Less than $15^{\circ}C$
  • B
    Between $15^{\circ}C$ and $30^{\circ}C$
  • C
    Less than $10^{\circ}C$
  • D
    More than $30^{\circ}C$

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Column-$I$ (Structure for growth)Column-$II$ (Parameter)
$P$. Maize root apical cell$I$. Length
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