Phaeophyta Division Phaeophyta Brown Algae I. Characteristics A. Multicellular, branching filaments B. Cell wall with inner cellulose layer, gelatinous pectic layer containing algin. Chloroplasts variable, but usually discoid. Larger forms with complex structure.
Tissues are groups of similar cells with similar function.
Groups of tissues making up a morphologically and often functionally distinct part of organism - organ. Since they do not have vascular systems, these structures are not true stems, roots, or leaves. Termed rhizoid, stalk or stipe, caulalia, and phyllidia. Tissues which are relatively unspecialized- parenchyma. Usually thin-walled, often isodiametric.