Which one of the following statement is wrong?

Options

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. Agar-agar is obtained from Gelidium and Gracilaria
D. Laminaria and Saragassum are used as food

Answer

B

Explanation

(b) Algin extracted from brown algae, e.g. Laminaria, etc. is a hydrocolloid used in shaving creams, jellies, flameproof plastic, etc. Carrageenan is extracted from red algae like Chondrus and used as emulsifier and clearing agent. Thus, only option (b) is incorrect and all other options are correct.