Home
Class 12
BIOLOGY
When a host fish species becomes extinct...

When a host fish species becomes extinct, its unique assemblage of parasites also meets the same fate. It is an example of

A

Co-extinction

B

Alien species invasion

C

Over-exploitation

D

Habitat loss

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • BIODIVERSITY AND CONSERVATION

    AAKASH INSTITUTE|Exercise SECTION - B (Objective Type Questions)|34 Videos

  • BIODIVERSITY AND CONSERVATION

    AAKASH INSTITUTE|Exercise SECTION - C (Previous Years Questions)|64 Videos

  • BIODIVERSITY AND CONSERVATION

    AAKASH INSTITUTE|Exercise EXERCISE|20 Videos

  • ANIMAL KINGDOM (GENERAL ACCOUNTS & NON-CHORDATES)

    AAKASH INSTITUTE|Exercise Assignment (Section-D)|10 Videos

  • BIOLOGICAL CLASSIFICATION

    AAKASH INSTITUTE|Exercise Assignment (Section-D) Assertion - Reason Type Questions|15 Videos

Similar Questions

Explore conceptually related problems

Mark true or false in the following statements. (i) Habitat loss and fragmentation is the most important cause driving animals and plants to extinction. (ii) Steller's sea cow has been extinct due to habitat loss. (iii) When alien species are introduced deliberated or unintentionally for whatever purpose, some of them turn invasive and cause extinction of indigenous species. (iv) When a host fish species becomes extinct its unique assemblage of parasites also meets the same fate.

Assertion : When need turns to greed, it leads to co-extinctions. Reason : When a species becomes extinct, the plant and animal species associated with it in a facultative way also become extinct.

When a species becomes extinct, the plant and animal species associated with it in an obligatory way also become extinct. This phenomenon is referred to as

Assertion: Co-extinction is also one of the evil quartet about biodiversity loss. Reason: When a species become extinct, the plant and animal species, associated with it in facultative way also become extinct.

Which of the following fish led to the extinction of an ecologically unique assemblage of more than 200 species of cichild fish in the lake Victoria of E.Africa ?

Fill in the blank with appropriate words. (i) Major cuases of biodiversity losses called as……….. (ii) Amazon rain forest is being cut and cleared for cultivating ………. Or for conversion of grassland for raising………. (iii) Passenger pigeon has been become extinct due to............ (iv) When a species becomes extinct the plant and animal species associated with it in............ way also become extinct.

Very similar species of fish release their eggs and sperms into the same water but the spermof one species cannot penetrate the eggs of another spicies. This is an example of prezygotic isolation by

Island biogeography theory states that the number of species on an island is determined by immigration rates of new species to the island and extinction rates of species on the island. Immigration rates to an island decline as its distance from the mainland increases adn extinction rates decreases with increasing island size. when the immigration and extinction rates on an island are equal, the number of species on the island reaches equilibrium. Which of the following gives the correct combination of distance (near and far) and area (small and large of islands where species (S_(1) -S_(4)) occur ?

AAKASH INSTITUTE-BIODIVERSITY AND CONSERVATION-SECTION - A (Objective Type Questions)
  1. Match the animals given in column A with their location in column B. ...

    Text Solution

    |

  2. IUCN Red List (2004) documents the extinction of A species in th...

    Text Solution

    |

  3. Loss of biodiversity in a region may lead to all of the following, exc...

    Text Solution

    |

  4. Presently A % of all mammal species and B % of all gy...

    Text Solution

    |

  5. The Evil Quartet represents the major causes of

    Text Solution

    |

  6. Which of the following is the most important cause driving animals and...

    Text Solution

    |

  7. Which of the following organisms are badly affected when large habitat...

    Text Solution

    |

  8. Extinction of more than 200 species of cichlid fish in lake Victoria w...

    Text Solution

    |

  9. When a host fish species becomes extinct, its unique assemblage of par...

    Text Solution

    |

  10. More than % of the drugs currently sold in the market worldw...

    Text Solution

    |

  11. Bio-prospecting is exploring molecular, genetic and species level dive...

    Text Solution

    |

  12. The fast dwindling A forest is estimated to produce B perce...

    Text Solution

    |

  13. How many biodiversity hotspots have been idnetified in the world?

    Text Solution

    |

  14. Strict protection of biodiversity hotspots could reduce ongoing mass e...

    Text Solution

    |

  15. "When we conserve and protect the whole ecosystem, its biodiversity at...

    Text Solution

    |

  16. Mark the correct match

    Text Solution

    |

  17. In which of the following method threatened animals are taken out from...

    Text Solution

    |

  18. Gametes of threatened species can be preserved in viable and fertile c...

    Text Solution

    |

  19. Select the incorrect match

    Text Solution

    |

  20. How many countries piedged their commitment to achieve by 2010, a sign...

    Text Solution

    |