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Question

Carbohydrates are commonly found as starch in plant storage organs. Which of the following properties of starch (a - e) make it useful as a storage material?
(a) Easily translocated
(b) Chemically less reactive
(c) Easily digested by animals
(d) Osmotically inactive
(e) Synthesized during photosynthesis

The useful properties are:

A
(a) and (e)
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B
(b) and (c)
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C
(b) and (d)
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D
(a), (c) and (e)
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Solution

The correct option is C (b) and (d)
Glucose is synthesised during photosynthesis and translocated as sucrose to various plant parts and stored as starch.

Starch is ideal for storage as it is chemically non-reactive when compared to monosaccharides and osmotically inactive and hence does not alter the water potential of cell sap.

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