English

Which of the following is used to remove chlorophyll from the leaves?

Advertisements
Advertisements

Question

Which of the following is used to remove chlorophyll from the leaves?

Options

  • Iodine solution

  • Methylated spirit

  • Potassium hydroxide

  • Soda lime

MCQ
Advertisements

Solution

Methylated spirit

Explanation:

Boil the leaf in methylated spirit over a water bath till it becomes pale-white due to the removal of chlorophyll.

shaalaa.com
  Is there an error in this question or solution?
Chapter 6: Photosynthesis - Review Questions [Page 79]

APPEARS IN

Selina Concise Biology [English] Class 10 ICSE
Chapter 6 Photosynthesis
Review Questions | Q A. 7. | Page 79

RELATED QUESTIONS

Name the following:

The main mineral constituent of chlorophyll.


The diagram is set up to demonstrate an experiment. Pond weed was placed in five water-filled tubes. The experiment was set up as shown in the diagram. The tubes were then left for 24 hours. Write the correct answer out of the five available choices: 

(i) In which tube would you except to find the plant with the least amount of starch? 
(a ) 1 (b) 2 (c) 3 (d) 4 (e ) 5 

(ii) The tube in which most oxygen would be found is 
(a ) 1 (b) 2 (c) 3 (d) 4 (e ) 5 

(iii) The tube in which least carbon dioxide would be found is 
(a ) 1 (b) 2 (c) 3 (d) 4 (e ) 5 

(iv) The tube in which the plant would survive for the shortest length of time is 
(a ) 1 (b) 2 (c) 3 (d) 4 (e) 5 


Are the following statement true or false? Give a reason in support of your answer.

Destarching of the leaves of a potted plant can occur only at night.


Complete the following by filling the blanks 1 to 5 with appropriate words/terms/phrases:

To test the leaf for starch, the leaf is boiled in water to ______ (1). It is next boiled in methylated spirit to ______ (2). The leaf is placed in warm water to soften it. It is then placed in a dish and ______ (3) solution is added. The region which contains starch, turns ______ (4) and the region which does not contain starch, turns ______ (5)


Given below is the representation of a certain phenomenon in nature. With four organisms 1-4.

  1. Name the phenomenon represented.
  2. Name any one organism that could be shown at No. 5.
  3. Name the biological process which was the starting point of the whole chain.
  4. Name one natural element which all the organisms 2-4 and even 5 are getting from No. 1 for their survival.

Given below is the representation of a certain phenomenon in nature. With four organisms 1-4.

Name one natural element which all the organisms 2-4 and even 5 are getting from No. 1 for their survival.


Given alongside is the diagram of an experimental set-up:

Will it work satisfactorily? Given reason.


A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.

What aspect of photosynthesis was being tested?


A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.

Write a balanced chemical equation to represent the process of photosynthesis. 


Complete the following sentence with appropriate word:

Carbon dioxide enters the leaf through _______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×