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Saumya performed an activity as follows:
She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.
Q. What would happen?
- a)Covered leaves would turn blue
- b)Uncovered leaves would turn blue
- c)Nothing will happen
- d)All leaves, covered and uncovered, would turn blue
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Saumya performed an activity as follows:She took a plant with many lea...
one of them will turn blue-black and the other will be reddish-brown. Iodine is an indicator that turns blue-black in the presence of starch. The leaf that was in the light turns blue-black, which demonstrates that the leaf has been performing photosynthesis and producing starch.
Most Upvoted Answer
Saumya performed an activity as follows:She took a plant with many lea...
Answer:
Explanation:
To understand the outcome of this activity, we need to understand the process of photosynthesis in plants and how it relates to the starch test.
Photosynthesis and Starch Test:
Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose (a type of sugar) and oxygen. This process occurs in the chloroplasts present in the leaves of plants. Starch is a complex carbohydrate that is formed as a result of photosynthesis and is stored in the chloroplasts.
The starch test is a common experiment used to detect the presence of starch in leaves. It involves the use of iodine solution, which turns blue-black in the presence of starch. This test is used to determine whether or not photosynthesis has occurred in a leaf.
The Activity:
In the given activity, Saumya covered one healthy leaf of the plant completely with black paper. The black paper would block sunlight from reaching the covered leaf, preventing photosynthesis from occurring in that specific area. The rest of the plant's leaves are left uncovered and exposed to sunlight.
Outcome:
After three days, when Saumya performs the starch test on both the covered and uncovered leaves, the uncovered leaves would turn blue, indicating the presence of starch. This is because the uncovered leaves were able to undergo photosynthesis and produce glucose, which was then converted into starch and stored in the chloroplasts.
On the other hand, the covered leaf would not turn blue because it was deprived of sunlight and could not undergo photosynthesis. Without photosynthesis, glucose production does not occur, and consequently, no starch is formed.
Therefore, the correct answer is option 'B' - Uncovered leaves would turn blue.
Explanation:
To understand the outcome of this activity, we need to understand the process of photosynthesis in plants and how it relates to the starch test.
Photosynthesis and Starch Test:
Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose (a type of sugar) and oxygen. This process occurs in the chloroplasts present in the leaves of plants. Starch is a complex carbohydrate that is formed as a result of photosynthesis and is stored in the chloroplasts.
The starch test is a common experiment used to detect the presence of starch in leaves. It involves the use of iodine solution, which turns blue-black in the presence of starch. This test is used to determine whether or not photosynthesis has occurred in a leaf.
The Activity:
In the given activity, Saumya covered one healthy leaf of the plant completely with black paper. The black paper would block sunlight from reaching the covered leaf, preventing photosynthesis from occurring in that specific area. The rest of the plant's leaves are left uncovered and exposed to sunlight.
Outcome:
After three days, when Saumya performs the starch test on both the covered and uncovered leaves, the uncovered leaves would turn blue, indicating the presence of starch. This is because the uncovered leaves were able to undergo photosynthesis and produce glucose, which was then converted into starch and stored in the chloroplasts.
On the other hand, the covered leaf would not turn blue because it was deprived of sunlight and could not undergo photosynthesis. Without photosynthesis, glucose production does not occur, and consequently, no starch is formed.
Therefore, the correct answer is option 'B' - Uncovered leaves would turn blue.
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Community Answer
Saumya performed an activity as follows:She took a plant with many lea...
Starch test means iodine test... uncovered leaves perform photosynthesis(prepare food) in presence of sunlight.. food is starch n glucose. so when anythng has starch iodine soln(brown) will turn dark blue.
leaf that was covered in black paper did not get sunlight, no food prepared so no starch so no reaction to iodine.
leaf that was covered in black paper did not get sunlight, no food prepared so no starch so no reaction to iodine.
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Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer?
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Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer? for Class 4 2024 is part of Class 4 preparation. The Question and answers have been prepared according to the Class 4 exam syllabus. Information about Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 4 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer?.
Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer? for Class 4 2024 is part of Class 4 preparation. The Question and answers have been prepared according to the Class 4 exam syllabus. Information about Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 4 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 4.
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Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Saumya performed an activity as follows:She took a plant with many leaves. Then she covered a healthy leaf of that plant completely with some black paper and left the plant in the open for three days. Finally she performed starch test on both the leaves.Q. What would happen?a) Covered leaves would turn blueb) Uncovered leaves would turn bluec) Nothing will happend) All leaves, covered and uncovered, would turn blueCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 4 tests.
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