Spectral profiles

I re-sampled the S2 data to 10 meter, and ranged the wavelength from 443 nm to 2190 nm. The spectral profile of the vegetation seems not to be continuous , why?
I am sorry that I cannot upload the picture.
The picture is in the following link:

link: https://www.dropbox.com/s/v6qg3snr3q5g0f7/2015-12-30%2015-01-24.tif?dl=0



The reason is that the spectrum is not recorded continuously.
You can learn more about the instrument on the sentinel page and reading the user handbook.