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Carbohydrates are commonly found as star...

Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material
(A) Easily translocated
(B) Chemically non-reactive
(C) Easily digested by animals
(D) Osmotically inactive
(E) Synthesized during photosynthesis
The useful proeprties ar :

A

B and C

B

B and D

C

A,C and E

D

A and E

Text Solution

AI Generated Solution

The correct Answer is:
To determine which properties of starch make it useful as a storage material in plants, we need to evaluate each of the given properties (A-E) based on their relevance to starch's role in storage. ### Step-by-Step Solution: 1. **Understanding Starch**: - Starch is a polysaccharide that serves as a storage form of carbohydrates in plants. It is synthesized from glucose during photosynthesis and stored in various plant organs such as tubers, seeds, and roots. 2. **Evaluating Each Property**: - **(A) Easily translocated**: - This property is not true for starch. Starch is not easily translocated in plants; instead, carbohydrates are usually transported in the form of sucrose. Therefore, this property does not contribute to starch's usefulness as a storage material. - **(B) Chemically non-reactive**: - Starch is relatively chemically non-reactive compared to simpler sugars like glucose. This property allows starch to be stored without undergoing reactions that could lead to its breakdown or alteration. Thus, this property is useful for storage. - **(C) Easily digested by animals**: - While starch can be digested by some animals (e.g., humans), this property does not enhance its function as a storage material in plants. The ability to be digested is not relevant to its role in storage. - **(D) Osmotically inactive**: - Starch is osmotically inactive, meaning it does not affect the osmotic balance of the cell. This property is crucial because it allows starch to be stored in cells without causing water to enter or leave the cells, which would disrupt cellular function. Therefore, this property is beneficial for storage. - **(E) Synthesized during photosynthesis**: - This statement is misleading. While glucose is synthesized during photosynthesis, starch itself is not directly produced during this process. Instead, starch is formed from glucose after photosynthesis. Thus, this property does not directly relate to starch's usefulness as a storage material. 3. **Conclusion**: - The properties that make starch useful as a storage material are: - **(B) Chemically non-reactive** - **(D) Osmotically inactive** ### Final Answer: The useful properties of starch as a storage material are **(B) Chemically non-reactive** and **(D) Osmotically inactive**. ---
To determine which properties of starch make it useful as a storage material in plants, we need to evaluate each of the given properties (A-E) based on their relevance to starch's role in storage. ### Step-by-Step Solution: 1. **Understanding Starch**: - Starch is a polysaccharide that serves as a storage form of carbohydrates in plants. It is synthesized from glucose during photosynthesis and stored in various plant organs such as tubers, seeds, and roots. 2. **Evaluating Each Property**: ...
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