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Which one of the following is not an ess...

Which one of the following is not an essential element for plants ?

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The element said to be deficient when present below the critical concentration [The Cone, of the essential elements below which plant growth is retarded is termed as critical concentrationj.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-MINERAL NUTRITION -EXERCISES
  1. Which one of the following is not an essential element for plants ?

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  2. Hydroponics help for

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  3. The number of macro essential mineral elements required by all plants ...

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  4. Which essential element is needed to activate the enzymes required for...

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  5. The coordination numbers of cation and anion in NaCl crystal are respe...

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  6. Which element is required for the formation of mitotic spidle ?

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  7. What is the role of sulphur in plant life ?

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  8. The micro essential mineral element which has been reported recently i...

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  9. Which element is necessary for the synthesis of the chief photosynthet...

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  10. What is photolysis of water ?

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  11. Which enzyme is activated by the 17th essential element ?

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  12. When is an element considered to be toxic ?

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  13. Which element when supplied in excess leads, to appearence of brown sp...

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  14. Name an anaerobic, free living, photo-hetrotrophic nitrogen fixing bac...

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  15. Which aquatic fern performs nitrogen fixation ?

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  16. Explain the role of the pink colour pigment in the root nodule of legu...

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  17. Apart from the cortical cells, which other cells are stimulated to div...

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  18. Which of the following can fix atmospheric nitrogen ?

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  19. What acts as oxygen scavenger in the legume - root nodule combination ...

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  20. In what why does aspargine differ from aspartic acid ?

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  21. Through which tissue the amino acids are transported inside the plant ...

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