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प्रश्न
Write two main functions of carbohydrates in plants.
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उत्तर १
Two main functions of carbohydrates in plants are:
- Polysaccharides such as starch serve as storage molecules.
- Cellulose, a polysaccharide, is used to build the cell wall.
उत्तर २
Two major functions of carbohydrates in plants are the following:
- Structural material for plant cell walls: The polysaccharide cellulose acts as the chief structural material of the plant cell walls.
- Reserve food material: The polysaccharide starch is the major reserve food material in the plants. It is stored in seeds and acts as the reserve food material for the tiny plant till it is capable of making its own food by photosynthesis.
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संबंधित प्रश्न
Glucose or sucrose are soluble in water but cyclohexane or benzene (simple six membered ring compounds) are insoluble in water. Explain.
Classify the following into monosaccharides and disaccharides.
Ribose, 2-deoxyribose, maltose, galactose, fructose and lactose
What are the hydrolysis products of sucrose?
The number of primary and secondary hydroxyl groups in ribose are -
(a) 1, 3
(b) 2, 3
(c) 3, 1
(d) 3, 2
The following molecule is called as:
\[\begin{array}{cc}
\ce{CHO}\phantom{..}\\
|\phantom{......}\\
\ce{(CHOH)4}\\
|\phantom{......}\\
\ce{CH2OH}
\end{array}\]
Which of the following gives a positive Fehling solution test?
The two functional groups present in a typical carbohydrate are:
A carbohydrate that cannot be hydrolysed into simpler units is called ____________.
The pair of compounds in which both the compounds give the positive test with Tollen’s reagent is:
Three cyclic structures of monosaccharides are given below which of these are anomers.
| (I) |  |
| (II) |  |
| (III) |  |
Name the sugar present in milk. How many monosaccharide units are present in it? What are such oligosaccharides called?
Monosaccharides contain carbonyl group hence are classified, as aldose or ketose. The number of carbon atoms present in the monosaccharide molecule are also considered for classification. In which class of monosaccharide will you place fructose?
What are glycosidic linkages? In which type of biomolecules are they present?
Which monosaccharide units are present in starch, cellulose and glucose and which linkages link these units?
