Write four differences between Algae and Fungi. Four key differences between Algae and Fungi: Feature Algae Fungi 1. Nutrition Autotrophic (photosynthetic); produce their own food using chlorophyll and sunlight Heterotrophic (saprophytic or parasitic); absorb nutrients from dead organic matter or living hosts 2. Pigmentation Contain chlorophyll and other photosynthetic pigments (green, brown, or red) Lack chlorophyll; non-photosynthetic; typically white, brown, or black 3. Cell Wall Composition Cell walls primarily made of cellulose Cell walls primarily made of chitin (same material as arthropod exoskeletons) 4. Habitat & Storage Primarily aquatic (marine and freshwater); store food as starch Primarily terrestrial; prefer moist, shaded environments; store food as glycogen