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Azolla is used as biofertilizer because...

Azolla is used as biofertilizer because

A

its leaves contain nitrogen fixing cyanobacterium Anabaena

B

its leaves are rich in urea

C

it stimulates growth of seedlings of Rice

D

It activates embryo for quick germination

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The correct Answer is:
A
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TRUEMAN BIOLOGY-KINGDOM MONERA - KINGDOM OF PROKARYOTES-Multiple choice question
  1. In blue green algal cell, the photosynthetic pigments are found

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  2. In blue green algae, attached to the freely lying thylakoids are prese...

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  3. Azolla is used as biofertilizer because

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  4. Nos toe is known to do

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  5. Nitrogenase is found in Nostoc in the

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  6. Cyanobacteria are characterised by

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  7. Nitrosomonas is a

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  8. Photosynthetic pigments of bacteria are located in

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  9. In photoautotrophic bacteria, the reaction centre is

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  10. The hydrogen donor in bacterial photosyn- thesis is usually

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  11. Peptidoglycan (Murein) and amino acids in cell wall are found in

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  12. A unique amino acid in the cell wall of Bacteria and BGA is

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  13. The bacteria which do not retain the crystal violet of iodine stain wh...

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  14. A bacterium divides every 35 minutes. If a culture containing 10^(5) c...

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  15. Which of the following uses light as energy source ?

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  16. A pigment due to which root nodules of leguminous plants are pinkish, ...

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  17. Some bacteria are not easily killed because of

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  18. Without the rotation of crop by a pulse in between cereals, the farmer...

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  19. In order to increase the yield of the cereal crops the farmer rotated ...

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  20. The bacterial flagellum has

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