Question

Which one of the following statements is wrong?

(a) Algae increase the level of dissolved oxygen in the immediate environment.

(b) Algin is obtained from red algae, and carrageenan from brown algae.

(c) Agar­agar is obtained from Gelidium and Gracilaria.

(d) Laminaria and Sargassum are used as food.

Answer 1

Ans: (b) Algin is obtained from red algae, and carrageenan from brown algae.

Sol: Alginic acid is obtained from brown algae whereas carrageenan is obtained from red algae.