Provide definitions/explanations for the following terms:
$(i)$ Alternation of generation
$(ii)$ Fungus

(N/A) $(i)$ Alternation of generation: It is a life cycle that occurs in those plants and algae in the distinct multicellular forms,which occur in two generations: the haploid gametophyte $(n)$ and the diploid sporophyte $(2n)$. These generations alternate with each other during the life cycle.
$(ii)$ Fungus: Fungi are a unique kingdom of heterotrophic organisms. They are eukaryotic,achlorophyllous,and mostly multicellular (except yeast). They have cell walls made of chitin and obtain nutrients through absorption (saprophytic,parasitic,or symbiotic).