Plant Kingdom Question 491

Question: A gelatinous coating outside the cellulosic cell wall is observed in the members belonging to brown algae. This gelatinous coating is called-

Options:

A) Algin

B) Polyalginate

C) Glycoalgin

D) Mannitol

Show Answer

Answer:

Correct Answer: A

Solution:

[a] Alginic acid is a phycocolloid, extracted commercially from giant brown algae or kelp.

Alginic acid is copolymer of $ \alpha -1, $ 4 D-mannuronic acid and $ \alpha -1, $ 4 L-glucuronic acid.