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.

Question

Quizplus · Accepted Answer

Although most algae have a cellulose/pectin cell wall, some, such as the dinoflagellates, lack a cell wall.

Answer: B
 Some algae can produce toxins that can cause infectious diseases in humans and other animals if ingested, such as certain types of red tide.

Answer: None of the other choices are true.
 C is false because algae are not plants and do not possess a vascular system; D is false because many algae are photosynthetic and can produce their own food through photosynthesis; E is false because while some algae reproduce sexually, others reproduce asexually through various methods.

Select the True Statement Regarding Algae