Select the TRUE Statement Regarding Algae

Select the TRUE statement regarding algae.

A) Although most algae have a cellulose/pectin cell wall, some algae lack a cell wall.
B) Some algae can directly cause infectious diseases in humans and other animals.
C) Algae are plants and therefore possess a highly organized vascular system.
D) Algae are generally saprophytic, living off dead and decaying matter.
E) Algae always reproduce sexually, producing both haploid and diploid generations.