A) a saprophytic relationship with the alga
B) an epiphytic relationship with the alga
C) a parasitic relationship with the alga
D) a symbiotic relationship with the alga
Correct Answer: D
Solution :
Lichens are composite organisms representing symbiotic association between phycobiont (algal component) and mycobiont (fungal component) ?the two components together behave as a single organism. The phycobiont benefits the mycobiont by providing carbohydrate. The mycobiont on the other hand, provides protection, water, salts and nitrogenous substances to the phycobiont
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