Question

name an alga which is used for obtaining agar

Answer 1

gelidium and gracilaria

Answer 2

Answer:

Agar is made from 'red algae'.

Explanation:

Agar, also known as agar-agar is a 'jelly-like substance' which is obtained from the 'cell walls' of red algae. It is a mixture of 'agarose' and 'agaropectin'.  Red algae are a part of the genera ‘gelidium’ and ‘gracilaria’.  

Agar is often used in Asian desserts and is also used for microbiological work, in gelatin, as a laxative, in soups, preservatives and also can be found in ice creams.