Read the given statements about lichens and select the incorrect ones.
(i) They represent an example of commensallism.
(ii) Algal partner obtains water and mineral salts from the fungus and the fungal partner obtains food prepared by the aiga.
(iii) These do not grow in polluted areas.
(iv) The mycobiont is usually an Ascomycetes or a Basididiomycetes.
(v) The phycobiont is mostly a green alga or a cyanobacterium.
(vi) These constitute the pioneer community in case of hydrosere.