(N/A) Fungi are heterotrophic organisms that obtain their nutrients through a process known as absorptive nutrition.
$1$. Saprophytic Nutrition: Most fungi are saprophytes,meaning they feed on dead and decaying organic matter. They secrete extracellular enzymes (such as cellulases,proteases,and lipases) into the environment to break down complex organic molecules into simpler,soluble forms.
$2$. Absorption: Once the organic matter is broken down into simpler nutrients like glucose,amino acids,and fatty acids,the fungal hyphae absorb these nutrients directly through their cell walls.
$3$. Parasitic Nutrition: Some fungi live as parasites on living plants or animals,absorbing nutrients directly from the host tissues using specialized structures called haustoria.
$4$. Symbiotic Nutrition: Certain fungi exist in symbiotic relationships,such as lichens (fungi with algae) or mycorrhizae (fungi with plant roots),where they exchange nutrients with their partners.