A) \[{{P}_{760}}\]
B) \[{{P}_{730}}\]
C) \[{{P}_{650}}\]
D) all of these
Correct Answer: C
Solution :
The seed germination is promoted by red wavelength (650 nm) and inhibited by far red (730 nm), this is due to the pigment phytochrome behaving in the following manner. \[\text{Germination}\xleftarrow[{}]{{}}{{\text{P}}_{730}}\underset{\begin{smallmatrix} [650\,nm] \\ \,\,\,\,\,\,\,\text{Red}\,\lambda \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{Far}\,\text{red}\,\lambda \\ [730\,nm] \end{smallmatrix}}{\mathop{}}}\,{{\text{P}}_{650}}\]\[\xrightarrow[{}]{{}}\]No germination
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