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Oxygen is harmful for...

Oxygen is harmful for

A

ferns

B

nitrogen fixing bacteria

C

chara

D

mango tree

Text Solution

Verified by Experts

The correct Answer is:
B
Nitrogen fixing bacteria are found in anaerobic conditions, i.e., absence of oxygen.
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NCERT EXEMPLAR-NATURAL RESOURCES -Natural Resources
  1. Soil erosion can be prevented by

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  2. What happens when rain falls on soil without vegetational cover?

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  3. Oxygen is harmful for

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  4. Rivers from land, add minerals to sea water. Discuss how ?

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  5. How can we prevent the loss of top soil?

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  6. How is the life of organisms living in water affected when water gets ...

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  7. During summer, if you go near the lake, you feel relief from the heat,...

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  8. In coastal area, wind current moves from the sea towards the land duri...

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  9. Following are a few organisms Which among the above can grow on stone...

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  10. Soil formation is done by both abiotic factors. List the names of thes...

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  11. All the living organisms are basically made up of C,N,S,P,H and O, . H...

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  12. Why does the percentage of gases like oxygen, nitrogen and carbon diox...

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  13. Why does moon have very cold and very hot temperature variations e.g.,...

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  14. Why do people love to fly kites near the seashore ?

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  15. Why does Mathura refinery pose problems to the Taj Mahal?

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  16. Why do not lichens occur in Delhi whereas they commonly grown in Manal...

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  17. Why does water need conservation even though large oceans surround the...

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  18. There is mass mortality of fishes in a pond. What may be the reasons?

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  19. Lichens are called pioneer colonisers of bare rock. How can they help ...

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  20. Soil is formed by water'. If you agree to this statements then give re...

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