Holdfast, stipe and frond constitutes the plant body in case of
1.
Rhodophyceae
2.
Chlorophyceae
3.
Phaeophyceae
4.
All of these
(c)Phaeophyceae In the members of class-Phaeophyceae, the plant body is usually attached to the substratum by a hold fast and hasa stalk called stipe and a leat like photosynthetic organ called frond.
