Answer
397.2k+ views
Hint: Starch test is done to find out the presence of carbohydrate in the sample. It is performed by using an Iodine solution. The test is known as the Iodine starch test. Starch test is used to check whether photosynthesis has occurred or not.
Complete answer:
To answer this question, we must know about the starch test.
In starch iodine test, the presence of carbohydrate or starch is inferred when the iodine solution turns blue black else absent.
This experiment is performed to demonstrate the importance of sunlight in photosynthesis. The plant was kept in the dark and the leaves turned pale yellow. On performing the starch iodine test on the pale yellow part of the leaf, the solution did not turn blue black.
Result: This proves that the starch is absent in the leaf. If the starch is absent then photosynthesis did not take place.
Variegated leaf-A variegated leaf is a leaf which contains white and green portions. The chlorophyll is only present in the green portion of the leaf. Example of such a leaf is Adam’s Needle, Chameleon plant.
Note: Plants prepare their food in the form of carbohydrate by the process of photosynthesis. The sunlight and chlorophyll are the limiting factors for the same without which photosynthesis cannot take place. The prepared food is stored in the form of starch.
Complete answer:
To answer this question, we must know about the starch test.
In starch iodine test, the presence of carbohydrate or starch is inferred when the iodine solution turns blue black else absent.
This experiment is performed to demonstrate the importance of sunlight in photosynthesis. The plant was kept in the dark and the leaves turned pale yellow. On performing the starch iodine test on the pale yellow part of the leaf, the solution did not turn blue black.
Result: This proves that the starch is absent in the leaf. If the starch is absent then photosynthesis did not take place.
Variegated leaf-A variegated leaf is a leaf which contains white and green portions. The chlorophyll is only present in the green portion of the leaf. Example of such a leaf is Adam’s Needle, Chameleon plant.
Note: Plants prepare their food in the form of carbohydrate by the process of photosynthesis. The sunlight and chlorophyll are the limiting factors for the same without which photosynthesis cannot take place. The prepared food is stored in the form of starch.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
At which age domestication of animals started A Neolithic class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)