UPSC Exam > UPSC Questions > Which of the following is/are the reasons be...
Start Learning for Free
Which of the following is/are the reasons behind the loss of biodiversity?
Over-exploitation
Co-extinctions
Fragmentation of habitats
Select the correct answer using the code given below.
- a)1, 2 and 3
- b)1 and 2 only
- c)3 only
- d)2 only
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Which of the following is/are the reasons behind the loss of biodiver...
The accelerated rates of species extinctions that the world is facing now are largely due to human activities. There are four major causes (‘ The Evil Quartet ’ is the sobriquet used to describe them).
- Habitat loss and fragmentation: This is the most important cause driving animals and plants to extinction. This habitat loss mainly happens due to tropical rain forests. For eg. The Amazon rain forest (it is so huge that it is called the ‘lungs of the planet’) harbouring probably millions of species is being cut and cleared for cultivating soya beans or for conversion to grasslands for raising beef cattle. Besides total loss, the degradation of many habitats by pollution also threatens the survival of many species. When large habitats are broken up into small fragments due to various human activities, mammals and birds requiring large territories and certain animals with migratory habits are badly affected, leading to population declines.
- Over-exploitation: Humans have always depended on nature for food and shelter, but when ‘need’ turns to ‘greed’, it leads to over-exploitation of natural resources. Many species extinctions in the last 500 years (Steller’s sea cow, passenger pigeon) were due to overexploitation by humans.
- Alien species invasions: When alien species are introduced unintentionally or deliberately for whatever purpose, some of them turn invasive, and cause decline or extinction of indigenous species. The Nile perch introduced into Lake Victoria in east Africa led eventually to the extinction of an ecologically unique assemblage of more than 200 species of cichlid fish in the lake; introduction of the African catfish Clarias gariepinus for aquaculture purposes is posing a threat to the indigenous catfishes in our rivers.
- Co-extinctions: When a species becomes extinct, the plant and animal species associated with it in an obligatory way also become extinct. When a host fish species becomes extinct, its unique assemblage of parasites also meets the same fate. Another example is the case of a coevolved plant-pollinator mutualism where extinction of one invariably leads to the extinction of the other.
Hence, all are correct options.
Attention UPSC Students!
To make sure you are not studying endlessly, EduRev has designed UPSC study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in UPSC.
|
Explore Courses for UPSC exam
|
|
Top Courses for UPSCView all
Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer?
Question Description
Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer?.
Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC.
Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following is/are the reasons behind the loss of biodiversity? Over-exploitation Co-extinctions Fragmentation of habitats Select the correct answer using the code given below.a)1, 2 and 3b)1 and 2 onlyc)3 onlyd)2 onlyCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice UPSC tests.
|
|
Explore Courses for UPSC exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup