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Mannitol is...

Mannitol is

A

Amino acids,Water, Minerals and Sugars

B

Amino alcohol

C

Sugar alcohol

D

Sugar acid.

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Mannitol**: Mannitol is a compound that needs to be classified based on its chemical structure and properties. 2. **Identifying the Options**: The options provided are: - Amino acids - Water minerals - Sugar - Amino alcohol - Sugar alcohol - Sugar acid 3. **Chemical Classification**: Mannitol is derived from a monosaccharide called mannose. Monosaccharides are simple sugars that consist of carbon, hydrogen, and oxygen. 4. **Reduction Process**: Mannitol is obtained through the reduction of mannose. This means that it is formed by adding hydrogen to mannose, which alters its structure. 5. **Properties of Mannitol**: Mannitol is categorized as a sugar alcohol. Sugar alcohols are a type of carbohydrate that have a structure similar to sugars but contain an alcohol group (-OH). 6. **Biological Role**: Mannitol serves various functions, including being used in medicine as an intracellular diuretic. It is also found as a storage sugar in some fruits and in brown algae. 7. **Conclusion**: Based on the classification and properties discussed, the correct answer is that mannitol is a sugar alcohol. **Final Answer**: Mannitol is a sugar alcohol. ---
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Mannitol (sugar alcohol) is the stored food in

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Select the correct match from the options given below {:("Phaeophyceae",-,"Mannitol"),("Rhodophyceae",-,"Dictyota"),("Chlorophyceae",-,"Non-motile gametes"),("Rhodophyceae",-,"Phycoerythrin"):}

I. In Rhodophyceae, food is stored as mannitol and laminarin II. Ovules of Gymnosperms are not enclosed by ovary wall III. Salvinia is heterosporous IV. In diplontic life cycle, free living gametophyte represents dominant phase Of the above statements :

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Read the following features for brown algae a- Presence of pigments Chlorophyll a and c. carotenoids and xanthophyll (fucoxanthin), b- Cell wall is composed of cellulose, pectin and hydrocolloids like carrageen. c- Gametes are pyriform with two laterally attached flagella d-Stored food may be in form of laminarin or mannitol d- Deepest dweller

Which of the following are the characteristics of phaeophyceae ? (i) possess chlorophyll a,c carotenoids and xanthophylls. (ii) Food stored is in the from of laminarin and mannitol. (iii) Asexual reproduction by biflagellate zoospores that have two equal apically attached flagella. (iv) Cell wall has cellulose and algin. (v) sexual reproduction is oogamous only. (vi) Gametes have two laterally attached flagella.