Photosynthetic organisms with chlorophylls a and c. Members are distinct from other such groups as determined by their cell ultrastructure and complexity of their body structure. This group includes members that have a higher level of tissue differentiation than any other protist. Some kelps form sieve-tube members able to transport photosynthate. In general, kelps also have a rather complex external morphology which can be divided into three features: the blade, a holdfast and the stipe. Primarily a marine group.

Link to Phaeophyta gopher directory

Recognize to Genus


Know conceptacles, receptacles, oogonia and antheridia, and be able to answer questions demonstrating an understanding of its life cycle.


Know by Common Name


Recognize blade, holdfast and stipe.for any kelp seen in lab