Phototaxis 小NM CANOHAWIGSAN ,,的 500 Accumulation of the phototrophic bacterium at light wavelengths at which its pigments absorb Phototaxis of an entire colony toward the light source on the rightPhototaxis • Accumulation of the phototrophic bacterium at light wavelengths at which its pigments absorb. • Phototaxis of an entire colony toward the light source on the right