Large complex algae with holdfasts $($for attaching to rocks and coral$),$ blades $($leaf$-$like$),$ stipes $($stem$-$like$)$ and bladders $($filled with gas for floatation$)$; mostly marine.

Question $22$ options:

a$)$

Chlorophyta

b$)$

Euglenophyta

c$)$

Bascillariophyta

d$)$

Phaeophyta