Class 7 Question

Which of the following, one element has not been proven to be essential in plants
  • a)
    Potassium
  • b)
    Sodium
  • c)
    Zinc
  • d)
    Iron
Correct answer is option 'B'. Can you explain this answer?

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Answers

Moulya Moulya Apr 08, 2020
Option B

Neeraj Oct 01, 2020
Sodium is not essential for plants bt it is used as micronutrients. sodium contain salt that is harmful for plants it react bad effect on plant. it effects as osomotion that diverted importent plant tissues.

Urvi Patel Apr 29, 2020
Option B

Abhimannu Kumar May 05, 2020

Sodium is correct answer

Karni Singh May 16, 2020
Option B is correct

Sharad Chavan Dec 07, 2020
Sodium is not an essential element for plants ...so the correct answer is B.

Anita Bhowmik Oct 12, 2020
Option B - Sodium

This has been proven not essential for plants

Drama Queen Apr 08, 2020
Notconsidered as plant nutrients because they do not meet the strict definition of “essentiality.” Sodium also has a very specific function in the concentration of carbon dioxide ...

Sodium is the correct answer .

Sakshi Gorade Jul 09, 2020
Option B is also correct

Abhishek Pandey Oct 11, 2020
Sodium is the right answer

Anjum Akhtar May 12, 2020
The correct option is (B)

Proy Karmakar May 25, 2020
No , the correct answer is sodium

Bhawna Bisht Dec 18, 2019
Sodium is not an essential element for plants but can be used in small quantities, similar to micronutrients, to aid in metabolism and synthesis of chlorophyll. In some plants, it can be used as a partial replacement for potassium and aids in the opening and closing of stomates, which helps regulate internal water balance. Chloride is needed in small quantities and aids in plant metabolism, photosynthesis, osmosis (movement of water in and out of plant cells) and ionic balance within the cell.

Mayank Joshi Oct 27, 2021
Sir/Mam/Friends Can Anyone Explain Those Know This Question Answer I Have Confusion Of This Answer

Sameer Kumar Aug 20, 2021
Option b sodium is correct

Shailly Agrawal Mar 26, 2020
Why sodium is not essential??

Yuva Sri Aug 25, 2021
Can explain the answer

Manirul Sk Sep 02, 2021
The element which is not so essential consists of an atomic number 16. So, the correct answer is '
Sodium
'. Note: The study of the chemical elements and compounds essential for plant growth is the plant minerals and these plant minerals are also responsible for the plant metabolism and their external supply

Advait Shelke May 18, 2020
I THINK ,
B OPTION IS CORRECT

Amit Sah Aug 24, 2021
Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is ²³Na. The free metal does not occur in nature, and must be prepared from compounds.

Shaswati Panda Jun 05, 2020
Correct answer is Sodium ...

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