Which one of the following statements is wrong?

Which one of the following statements is wrong?
A Agar-agar is obtained from $Gelidium$ and $Gracilaria$
B $Laminaria$ and $Sargassum$ are used as food
C Algae increase the level of dissolved oxygen in the immediate environment
D Algin is obtained from red algae, and carrageenan from brown algae.

Algae – Economic Importance in past papers

3 questions from this chapter have appeared across 3 exam years.

Keep going

Practise Algae – Economic Importance All 3 questions This chapter in 2016 Phase II