Question:

Agar-agar is obtained from :

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Agar-agar is obtained from the cell wall of red algae. Algae have a thallus-like structure and are the most primitive organisms of the plant kingdom. Algae do not have vascular tissue and possess very less differentiation of true tissues in them.

Updated On: Sep 14, 2022
  • green algae
  • red algae
  • brown algae
  • blue-green algae
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The Correct Option is B

Solution and Explanation

Agar-agar is obtained from red algae

 Agar-agar is a non-nitrogenous carbohydrate consisting of two polysaccharides namely, agarose and agaropectin. Agar-agar is obtained from several red algae e.g., Gelidium, Gracilaria, Chondrus etc.

The other options:

  • Green algae- It is green due to the presence of chlorophyll a and b.
  • Brown Algae- It is brown in color due to the presence of chlorophyll a and c along with fucoxanthin.
  • Blue-Green algae- They are cyanobacteria, a group of photosynthetic prokaryotes.

Also Read: Algal Bloom

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Concepts Used:

Algae

An Algae is a term mentioning a group of photosynthetic eukaryotic organisms. It has chlorophyll and nucleus but no root, stem, leaves and many features like normal land plants. Algae is both unicellular (e.g. Euglenophyta) and multicellular (e.g. seaweeds). Algae do photosynthesis and help in oxygen production

Algae can live in various habitats like moist rocks, soils, water bodies (both freshwater and marine) and in some animals (e.g. Sloth). Unicellular Algae belong to the Protista Kingdom and Multicellular algae belong to the Plantae Kingdom, but formerly all algae are categorized under kingdom Plantae for their photosynthetic nature.

Also Read: Difference Between Algae and Fungi

Algae