Explain how certain bacteria which require light for photosynthesis, survive under weeds in ponds and rocks.

Explain how certain bacteria which require light for photosynthesis, survive under weeds in ponds and rocks.

The bacteria chlorophyll absorb light of different wavelengths optimum for photosynthesis from that used by the plants thus, bacteria find the spectrum useful after the plants have filtered out light for photosynthesis.

Secondary, the rocks supply hydrogen sulphide.

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