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Habetal loss and fragmentation over expo...

Habetal loss and fragmentation over expolition, alien species invasion and co-extinction are causes for:

A

migration

B

pollution

C

biodiversity loss

D

population explosion

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The correct Answer is:
C
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What is the collective term for " habitat loss and fragmentation , over- exploitation , invasion on of alien species and co-extinction " ?

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Which of these is not example of alien species invasion ?

Biodiversity loss occurs due to (i) habitat loss and fragmentation (ii) co-extinction (iii) over-exploitation (iv) alien species invasion.

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.

With the help of any one example explain Alien species invasion as one of the causes of Biodiversity losses.

Read the following passage carefully and answer the question given below. Earth in home to more than 16,000 species of plants, animals, fungi, and algae that are currently listed as endangered on the IUCN Red List of Threatened species. In the U.S. alone, nearly 700 species of animals and 900 species of plants are considered threatened or endangered. Given that human-made threats-such as habitat fragmentation, overhunting, overfishing, global warming, invasive species and pollution-are the major drivers of modern extinctions and population declines, the preservation and recovery of endangered species depend on human awareness and intervention. Endangered Species Day is observed each year on the third Friday of May as a way to both raise awareness of the continued underline("plight") of endangered species and celebrate those that have recovered becuase of conservation efforts. The U.S. Endangered Species Act of 1973 has been credited with the recovery and protection of several prominent American species, including the bald eagle, the American alligator, and the gray wolf. Globally, many governments, non-governmental organizations, and grassroots efforts have made great strides to protect our natural heritage, though the fight to preserve biodiversity is ever ongoing. Which of the following species was recovered by the help of The U.S. Endangered Species Act of 1973 ?

GRB PUBLICATION-BIODIVERSITY AND CONSERVATION-NCERT CORNER (EXEMPLAR PROBLEMS)
  1. Habetal loss and fragmentation over expolition, alien species invasion...

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  2. Which of the following countries has the highest biodiversity?

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  3. Which of the following is not a cause for loss of biodiversity ?

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  4. Which of the following is not an invasive alien species in the Indian ...

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  5. Where among the following will you find pitcher plant?

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  6. Which one of the following is not a major characteristic featuer of bi...

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  7. Match the animals given in column A with their location in column B: ...

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  8. What is common to the following plants: Nepenthes Psilotum, Rauwolfia ...

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  9. The one-horned rhinoceros is specific to which of the following sanctu...

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  10. Amongst the animal groups given below, which one has the highest perce...

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  11. Which one of the following is an endangered plant species of India?

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  12. What is common to Lantana, Eichornia and African catfish ?

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  13. The extinction of passenger pigeon was due to

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  14. Which of the following statements is correct?

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  15. Among the ecosystem mentioned below, where can one find maximum biodiv...

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  16. Which of the following forests is known as the 'lungs of the planet ea...

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  17. The active chemical drug reserpine is obtained from

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  18. Which of the following group exhibit more species diversity

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  19. Which of the below mentioned regions exhibit less seasonal variations ...

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  20. The historic convention on Biological Diversity held in Rio de Janeiro...

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  21. What is common to the techniques (i) in vitro fertilisation, (ii) Cryo...

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