A) alagae and fungi
B) algae and Cycas
C) algae and bacteria
D) Pimis and fungi
Correct Answer: A
Solution :
Lichen is symbiotic association of algae and fungi. According to a view for the nature of association in lichen, the relationship is an example of symbiosis but the fungus in this partnership has upper hand. The algal partner lives as a subordinate partner, the association between the two partners is thus, described as beneficial salavary for the alga. A term helorism is used for this kind of association. Blue-green algae (Anabaena, Nostoc) live in the corralloid root of Cycas and fixes the atmospheric nitrogen. The symbiotic relationship between fungi and root of higher plants is known as mycorrhiza.
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