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Which polysaccharide is obtained from the cell walls of red algae and remains semisolid at room temperature?
  • a)
    Agar-agar
  • b)
    Chyme
  • c)
    Guttation
  • d)
    Keratin
Correct answer is option 'A'. Can you explain this answer?
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Which polysaccharide is obtained from the cell walls of red algae and ...
Agar-agar is a polysaccharide obtained from the cell walls of red algae and remains semisolid at room temperature. It is commonly used as an emulsifying agent in pharmaceuticals and for solidifying synthetic media in artificial cultural work.
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The correct answer is c i.e Jute. The fibers that come from the inner bark of the plants are known as bast fiber. Jute is a bast fiber. Different types of natural and man-made fibers are available in the world. So it is essential to know the properties of fibers. Without that, it is not possible to separate one fiber from others. Every fiber has its qualities. Jute is in great demand due to its cheapness, softness, length, luster, and uniformity of its fiber. It is called the 'brown paper bag' as it is also the most used product in gunny sacks to store rice, wheat, grains, etc. It is also called the 'golden fiber' due to its versatile nature, length, Making twine, rope, and matting are among its uses​. Nylon This type of synthetic fiber is obtained from coal, water, and air. It is very lustrous, easy to wash, and elastic. It dries quickly and retains its shape. It finds its application in car seat belts, sleeping bags, socks, ropes, etc. It is also used in ropes for rock climbing, making parachutes, and fishing nets. Rayon This is a type of synthetic fiber obtained from wood pulp. This fabric is soft, absorbent, and comfortable. It is easy to dye in a wide range of colors. It can be mixed with cotton to make bedsheets. It is mixed with wool to make carpets. Polyester This type of synthetic fiber is obtained from coal, water, air, and petroleum. It is made from repeating units of a chemical known as esters. It is easy to wash and it remains wrinkle-free and it is quite suitable for making dress material. Polyester retains its shape and remains crisp. It is used in making ropes, nets, raincoats, jackets, etc.

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Which polysaccharide is obtained from the cell walls of red algae and remains semisolid at room temperature?a)Agar-agarb)Chymec)Guttationd)KeratinCorrect answer is option 'A'. Can you explain this answer?
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