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What substance is commonly used to test for the presence of starch in leaves?
- a)Benedict's solution
- b)Iodine solution
- c)Biuret solution
- d)Silver nitrate solution
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
What substance is commonly used to test for the presence of starch in ...
Iodine solution is used to test for the presence of starch. When applied to a leaf, it turns blue-black if starch is present, indicating that photosynthesis has occurred.
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What substance is commonly used to test for the presence of starch in ...
Explanation:
Iodine solution:
- Iodine solution is commonly used to test for the presence of starch in leaves.
- When iodine solution comes in contact with starch, it changes its color from brown to blue-black.
- This color change occurs due to the formation of a starch-iodine complex, which is a characteristic reaction of starch.
Procedure:
- To test for the presence of starch in leaves, a leaf is first boiled in water to soften it and break down the cell walls.
- The leaf is then placed in a petri dish and covered with a few drops of iodine solution.
- If the leaf contains starch, the iodine solution will turn blue-black in the areas where starch is present.
- If the leaf does not contain starch, the iodine solution will remain brown.
Significance:
- Starch is a complex carbohydrate that is synthesized by plants during photosynthesis.
- The presence of starch in leaves indicates the plant's ability to produce and store energy for growth and other metabolic processes.
- Testing for starch in leaves can help in studying the process of photosynthesis and understanding the plant's physiological status.
Iodine solution:
- Iodine solution is commonly used to test for the presence of starch in leaves.
- When iodine solution comes in contact with starch, it changes its color from brown to blue-black.
- This color change occurs due to the formation of a starch-iodine complex, which is a characteristic reaction of starch.
Procedure:
- To test for the presence of starch in leaves, a leaf is first boiled in water to soften it and break down the cell walls.
- The leaf is then placed in a petri dish and covered with a few drops of iodine solution.
- If the leaf contains starch, the iodine solution will turn blue-black in the areas where starch is present.
- If the leaf does not contain starch, the iodine solution will remain brown.
Significance:
- Starch is a complex carbohydrate that is synthesized by plants during photosynthesis.
- The presence of starch in leaves indicates the plant's ability to produce and store energy for growth and other metabolic processes.
- Testing for starch in leaves can help in studying the process of photosynthesis and understanding the plant's physiological status.
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Community Answer
What substance is commonly used to test for the presence of starch in ...
When we put iodine solution on any substance which contain starch like cake it contain starch then it will turn blue-black color
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What substance is commonly used to test for the presence of starch in leaves?a)Benedict's solutionb)Iodine solutionc)Biuret solutiond)Silver nitrate solutionCorrect answer is option 'B'. Can you explain this answer?
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