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Agriculturists have reported about 40-50...

Agriculturists have reported about 40-`50%` higher yields of rice by applying

A

Azolla

B

Cyanophycean members

C

Mycorrhizae

D

Thorn forest

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The correct Answer is:
A
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CENGAGE BIOLOGY-MINERAL NUTRITION-ARCHIVES
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  2. a plant requires magnesium for :

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  3. Which of the following is a flowering plant with nidules containing fi...

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  4. About 98 percent of the mass of every living organism is composed of j...

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  5. Which one of the following elements is not an essential micronutrient ...

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  6. Carbohydrates are commonly found as starch in plant storage organs. Wh...

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  7. Nitrogen fixation in root nodules of Alnus is brought about by

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  8. Nitrogen fixation in root nodules of Alnus is brought about by

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  9. Guard cells help in

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  10. Manganese is required in

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  11. Which of the following is a symbiotic nitrogen fixer ?

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  12. Which one of the following pairs is wrongly matched?

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  13. An element playing important role in nitrogen fixation is

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  14. Which one of the following is not a micronutrient

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  15. The chief water conducting elements of xylem in gymnosperms are

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  16. Which one of the following structures between two adjacent cells is an...

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  17. One of the free-living, anaerobic nitrogen-fixer is Or which of th...

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  18. The common nitrogen-fixer in paddy fields is

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  19. Nitrifying bacteria:-

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  20. Which one of the following elements (miconutrients) in plants is not r...

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  21. A prokaryotic autotrophic nitrogen fixing symbiont is found in

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