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

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Drug Addiction

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|20 Videos
  • ECOSYSTEM

    TRUEMAN BIOLOGY|Exercise MCQ|179 Videos

Similar Questions

Explore conceptually related problems

Assertion (A): Receptors are crucial to body's communication process. Reason (R) : Receptors are proteins.

Assertion. Calcium deficiency symptoms first appear in the apical region. Reason. Calcium is highly mobile in plants

Assertion (A): Chemical messengers are chemicals that enable communication of message between two neurons or between neurons and muscles. Reason (R) : Chemicals enter the cell through receptor.

Assertion.Cyanobacteria are photosynthetic blue-green algae with procaryotic structure. Reason. They are green due to presence of chloroplasts.

Assertion : Besides chlorophyll a, blue - green and red algae show the presence of phycobiliproteins . Reason : Chlorophyll and phycobiliproteins are integrated into thylakoids.

Assertion (A). Higher yield in case of bell pepper can be achieved by growing them in CO_(2) enriched green houses Reason (R). Due to higher intracellular CO_(2) concentration in bundle sheath cells, RuBisCO mainly acts as carboxylating enzyme

Which of the following regions of the brain is incorrectly paired with its function ? 1. Cerebellum - language comprehension 2. Corpus callosum - communication between the left and right cerebral cortices 3. Cerebrum - calculation and contemplation 4. Medulla oblongata - homeostatic control

The octahedral complex of a metal ion M^(3+) with four monodentate lignads L_(1), L_(2), L_(3) and L_(4) absorb wavelengths in the region of red, green, yellow and blue respectively. The increasing order of ligand strength of the four ligands is -

TRUEMAN BIOLOGY-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 , member of successive higher levels are fewer i...

    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. Read the given statement and select the correct option. Statement 1:...

    Text Solution

    |

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

    Text Solution

    |