(a) State two advantages of complex structural organisation in higher organisms. (b) (i) List two differences between colonial organisms and filamentous org...

 (a) State two advantages of complex structural organisation in higher organisms.

(b) (i) List two differences between colonial organisms and filamentous organisms.
(ii) Give one example each of a colonial organisms and a eke filamentous

(c) Make a labelled diagram 10 - 12 cm long to show the structure of a named filamentous alga. 
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