[4] 73 ALGrlE 



Bladder-wrack (Fucus). 



A. Make a drawing of the thallns shewing the forked branching, the attachment, and the swollen ends of 

 the branches bearing conceptades. 



B. Examine a transverse section of the thallus. Draw (a) the closely packed assimilating cells with phceoplasts 

 on the surface, (b) the thin-walled conducting cells in transverse section, (c) the thick-walled fibres in transverse 

 section. 



