English
Karnataka Board PUCPUC Science 2nd PUC Class 12

Explain the concept of "co-extinction" by taking two examples.

Advertisements
Advertisements

Questions

Explain the concept of "co-extinction" by taking two examples.

What is co-extinction? Explain with a suitable example?

Explain
Short/Brief Note
Advertisements

Solution

When a species becomes extinct, the plant and animal species associated with it, in an obligatory way, also become extinct, e.g., when a host fish species becomes extinct, its parasites also vanish. This is called co-extinction. Some other examples of co-extinction are, plant-pollinator mutualism where the extinction of one leads to the extinction of the other and monophagous insect that feeds on particular plant species becomes extinct due to extinction of that plant species.

shaalaa.com
  Is there an error in this question or solution?
Chapter 15: Biodiversity and Conservation - SHORT ANSWER [Page 111]

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Species that possess a very high risk of extinction due to rapid population decline of about 50 - 70 % over three generations is designated as ______.


Match the following and choose the correct alternative.

  Column I   Column II
i. Not evaluated a. Pervasive and abundant after careful assessment
ii. Near threatened b. Information related to risk of extinction is lacking in some way
iii. Least concern c. Described by scientist but not assessed by the IUCN
iv. Data deficient d. May meet the criteria for threatened status in the near future

The Red List of threatened species is published by ______.


'The Evil Quartet' is a concept which describes the ______.


Threatened species are those which ______.


Match the following columns.

Column - I Column - II
(i) Dodo  (a) Africa 
(ii) Ouagga  (b) Russia 
(iii) Thylacine (c) Mauritius 
(iv) Stellar's sea cow (d) Australia

Choose the correct match from the following


What is common to lantana Eichhomia and African catfish?


Which of the following statements is correct?


Which among the following forests is known as the "lungs of the planet earth"?


What is common to the species shown in figures A and B?

A B

What criteria should one use in categorizing a species as threatened?


Name any two biodiversity hot spots in India.


The species placed in CR category is ______.


Many species like Stellar's Sea cow and passenger pigeon have been driven to the brink of extinction. Which of the following describes this situation?


Mention any two places where the ex-situ conservation is undertaken.


Which one of the following groups faces maximum threat of extinction? 


The sixth extinction in progress currently is different from all previous extinctions on earth as it is ______.


Give definitions of Invasive species.


What are the reasons for loss of biodiversity?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×