Hydrocolloid is

(1) Water soluble substance

(2) Water holding substance

(3) Hydrogen gas containing substance

(4) Oxygen gas containing substance

(1) Water holding substance

(2) Obtained from brown algae

(3) Non sulfated water holding substance

(4) All of these

(1) Water holding substance

(2) Obtained from red algae

(3) Sulfated water holding substance

(4) All of these

(1) Gelidium

(2) Gracilaria

(3) Volvox

(4) All of these

(1) To grow microbes

(2) To prepare ice-creams

(3) To prepare jellies

(4) To supplement protein for space travellers

(1) An unicellular alga

(2) Rich in proteins

(3) Used as food supplement even by space travellers

(4) Used to grow microbes

(1) Laminaria

(2) Sargassum

(3) Porphyra

(4) Volvox

(1) are not Green algae

(2) are not unicellular, colonial, or filamentous plant body

(3) do not have pigments chlorophyll a and b

(4) have pigments localised in the chloroplast

(1) Chlorophyceae

(2) Phaeophyceae

(3) Rhodophyceae

(4) All of these

(1) Storage bodies located in cytoplasm of chloropbyceae

(2) Storage bodies located in cytoplasm of Phaeophyceae

(3) Storage bodies located in chloroplast of chlorophyceae

(4) Storage bodies located in chloroplast of Phaeophyceae