If you were married or an RDP as of the last day of the tax year or if your spouse/RDP died during the tax year, you may be considered unmarried or considered not in a registered domestic partnership for head of household purposes if you meet all of the following requirements:
1 The cell walls of these non-motile cells are made of chitin. 2  Fungi are heterotrophic organisms. 3  The only difference between other heterotrophic animals and fungi is that fungi digest and then ingest the food. 4  Fungi release enzymes on the body of the other living things and thrive on them. The only difference between other heterotrophic animals and fungi is that fungi digest and then ingest the food. 2  Fungi release enzymes on the body of the other living things and thrive on them. 3  Fungi lack chlorophyll, which is a pigment used by plants to produce food.
Fungi have filamentous bodies. Fungi are basi-cally filamentous in their growth form (that is, theirbodies consist of long slender filaments called hy-phae), even though these hyphae may be packed to-gether to form complex structures like the mush-room.19 36 Fungi Concept Outline 36.1 Fungi are unlike any other kind of organism. A Fungus Is Not a Plant. Unlike any plant, all fungi arefilamentous heterotrophs with cell walls made of chitin. The Body of a Fungus. Cytoplasm flows from one cellto another within the filamentous body of a fungus.