why chloropigment-a imporatant in algae

Dear Student,
All plants, cyanobacteria, and algae which photosynthesize contain chlorophyll "a".  Chlorophyll-a is present in all groups of algae.  Chlorophyll-a is essential because it is able to capture light wavelengths that fall in the spectrum of sunlight. Once captured by chlorophyll-a, sunlight combines with water and carbon dioxide to produce glucose molecules and energy to power the algal cell functions. 
Chlorophyll-a is a green pigment and it gives algae its natural green color.


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