FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They do not affect the water concentration inside cells
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They do not move away from the storage areas in the plant
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Both are correct
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Neither are correct
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Detailed explanation-1: -Plants store energy in the form of starch, instead of glucose, because starch is insoluble. This means that starch will not effect the water concentration inside cells and also it will not move away from the storage areas within the plant.
Detailed explanation-2: -Glucose molecules are soluble in water and thus can cause the cell to become hypertonic. This will result in the entry of water molecules within the cells and cause it to lyse. On the other hand, glycogen is insoluble in water and therefore stays inert. It does not cause any imbalance in osmotic pressure.
Detailed explanation-3: -They are made up of glucose units. Thus, they occupy less space and are considered less bulky. Another added advantage is that starch and glycogen can be easily hydrolyzed to glucose whenever required. Further, both the polysaccharides are insoluble in water, unlike glucose which shows high water solubility.
Detailed explanation-4: -This is because glucose and sucrose are both water soluble, which means that they will interfere with the water concentration in cells by increasing the solute concentration. So these sugars have to be stored as insoluble molecules.