Botany - Plant Kingdom Question with Solution | TestHub

Importance of algae

$1.$50% of CO₂fixation on earth is carried out by algae during photosynthesis.

$2.$Algae as food :

a. About 70 species of marine algae are used as food. Example -Porphyra, Sargassum, Laminaria,etc.

b. Unicellular algae likeChlorellaandSpirulinaare rich in proteins and also used by space travellers.

$3.$Water holding chemicals (hydrocolloids) - Algin (obtained from red algae) and Carragenin (obtained from red algae) are commercially used hydrocolloids.