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[A] : Stratosphere is an excellent regio...

[A] : Stratosphere is an excellent region for air travel .
[R] : Because it is poor in oxygen & rich in ozone .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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TRUEMAN BIOLOGY-Ecology -ASSERTION AND REASON
  1. Assertion (A) : Tropical rain forests are disappearing fast from devel...

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  2. [A] : Leaf butterfly & stick insect show mimicry to dodge their enemi...

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  3. [A] : In a food chain , membrane of successive higher levels are fewer...

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  4. Assertion (A) : Methane component of greenhouse gases contributing to ...

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  5. Assertion: Suspended particulate matter(SPM) is an important pollutant...

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  6. Assertion : Age sex structure of human population in countries like Fr...

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  7. Assertion (A) : Presently, the global atmosphere is warming up. Reas...

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  8. [A] : Ozone depletion at the south pole will threats world's fisheries...

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  9. [A] : Inquilines can not survive without human care . [R] : Cultige...

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  10. [A] : Problems of ecological environment arise from over population....

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  11. [A] : Social forestry programme is grows trees for fuel , fodder & fru...

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  12. [A] : Cultigens (domesticated animals & cultivated plants ) are not in...

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  13. [A] : Population density of indicator organisms show degree of water p...

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  14. [A] : Traffic Jams cause giddiness , reduced vision , exhaustion etc ....

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  15. [A] : Thermal pollution is harmful to fishes . [R] : Heating cause...

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  16. [A] : Stratosphere is an excellent region for air travel . [R] : Be...

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  17. [A] : Using dung as fuel greatly reduces grain production . [R] : Du...

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  18. Assertion : Lichens are a pioneer community in the temperate region. ...

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  19. Read the given statement and select the correct option. A: Global wa...

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  20. [A] : Life occurs upto 15000 m in the air on mountains . [R] : At gr...

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