Hydrocolloid is

(1) Water soluble substance

(2) Water holding substance

(3) Hydrogen gas containing substance

(4) Oxygen gas containing substance

Subtopic:  Algae |
 93%
From NCERT
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Algin

(1) Water holding substance

(2) Obtained from brown algae

(3) Non sulfated water holding substance

(4) All of these

Subtopic:  Algae |
 79%
From NCERT
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Carrageen

(1) Water holding substance

(2) Obtained from red algae

(3) Sulfated water holding substance

(4) All of these

Subtopic:  Algae |
 90%
From NCERT
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Agar is not obtained from

(1) Gelidium

(2) Gracilaria

(3) Volvox

(4) All of these

Subtopic:  Algae |
 88%
From NCERT
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Agar is not used in

(1) To grow microbes

(2) To prepare ice-creams

(3) To prepare jellies

(4) To supplement protein for space travellers

Subtopic:  Algae |
 85%
From NCERT
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Chlorella is not

(1) An unicellular alga

(2) Rich in proteins

(3) Used as food supplement even by space travellers

(4) Used to grow microbes

Subtopic:  Algae |
 85%
From NCERT
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Which of the marine algae is not used as food?

(1) Laminaria

(2) Sargassum

(3) Porphyra

(4) Volvox

Subtopic:  Algae |
 89%
From NCERT
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The members of chlorophyceae are not

(1) Green algae

(2) Unicellular, colonial or filamentous plant body

(3) Pigments chlorophyll a and b

(4) Pigments are localised in the chloroplast

Subtopic:  Algae |
 84%
From NCERT
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Chloroplasts can be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species. Such variety can be found in

(1) Chlorophyceae

(2) Phaeophyceae

(3) Rhodophyceae

(4) All of these

Subtopic:  Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae |
 85%
From NCERT
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Pyrenoid is

(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

Subtopic:  Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae |
 78%
From NCERT
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