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?

Class 7 Question

By Driahti Arora · Mar 26, 2020 ·Class 7
22 Answers
Karni Singh answered 4 weeks ago
Option B is correct

Hema Amrutha answered Nov 24, 2019
Opt b is ans

Padmavati Mohanty answered Apr 09, 2020
Option (b) sodium

Anjum Akhtar answered 4 weeks ago
The correct option is (B)

Proy Karmakar answered 2 weeks ago
No , the correct answer is sodium

प्यारे लाल answered May 05, 2020
Sodium is the correct answer .

Drama Queen answered 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 ...

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

Bhawna Bisht answered 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.

Shubhangi Sinha answered 2 weeks ago
Sofi but how

Advait Shelke answered 3 weeks ago
I THINK ,
B OPTION IS CORRECT

Shaswati Panda answered 2 days ago
Correct answer is Sodium ...

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