Home
Class 12
BIOLOGY
Assertion : Lichens are a pioneer commun...

Assertion : Lichens are a pioneer community in the temperate region.
Reason : Blue-green algae grow as the pioneer community in the tropical region.

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

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • Drug Addiction

    TRUEMEN BIOLOGY ENGLISH|Exercise ASSERTION AND REASON|20 Videos
  • ECOSYSTEM

    TRUEMEN BIOLOGY ENGLISH|Exercise MCQ|178 Videos

Similar Questions

Explore conceptually related problems

The temperate regions show a lower value of primary productivity as compared to tropical regions.

Pioneer community established in bare rock is

State one reason for adding blue-green algae to the agricultural soil.

Assertion : Tropical regions have got a long evolutionary time for species diversification as compared to temperate regions. Reason : Temperate regions have undergone frequent glaciations in the past whereas tropical regions have remained relatively undisturbed for millions of years.

Pioneer community established on a bare rock is

Assertion : Receptors are crucial to body's communicational process. Reason : Receptors are proteins.

What will be the P/R ratio of a climax community and a pioneer community? What explanation could you offer for the changes seen in P/R ratio of a pioneer community and the climax community?

Which of the following forms pioneer community in hydrarch succession?

Greater biological diversity of tropics than temperate regions is due to the

Assertion: Green algae best exhibit the origin and evolution of sexual reproduction. Reason: Green algae are most primitive algae.

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  19. Assertion: Global water cycle does not involve the living organisms. ...

    Text Solution

    |

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

    Text Solution

    |