What is the optimum wavelength for spore germination? What percent of the spores germinate at this wavelength?Refer to Figure 21-3.
HELp

Spores germinate if they get the favorable condition to grow including moisture, temperature, and oxygen. The optimum wavelength is 630 nm as 90% of spores germinated at this length.
Spores germination is the biophysical property that allows the Microsporidia to germinate within the cell that gives the rise to the other cells that form gametophytes through the asymmetric cell division.
Optimum wavelength is the factor that allows the germination to occur and is 630 nm as 90% of spore germination is seen in this range of the wavelength.
Therefore, 630 nm is the optimum wavelength for spore germination.
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