Advertisements
Advertisements
Question
Can you think of a situation where we deliberately want to make a species extinct? How would you justify it?
Advertisements
Solution
Yes, there are situations where we deliberately want to drive certain species to extinction. This argument is highly justified in the following way:
- Target Species: This classification applies to causal organisms or pathogens that trigger deadly epidemic human diseases (such as the Polio virus, HIV, and Varicella virus).
- Justification: Eradicating these disease-causing viruses is completely justified because they are extremely harmful to human health and survival. Furthermore, they do not play any beneficial role as decomposers or producers, and their elimination does not disturb the natural food chains or ecosystem stability.
APPEARS IN
RELATED QUESTIONS
Give any 'two' examples of endangered species
Answer the following question:
Substantiate with the help of one example that in an ecosystem mutualists
(i) tend to co-evolve and
(ii) are also one of the major causes of biodiversity loss.
Suggest two practices giving one example of each, that help protect rare or threatened species.
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 |
Species that possess a high risk of extinction with very few surviving members (50) are categorised as ____________ by the IUCN.
The Red List of threatened species is published by ______.
'The Evil Quartet' is a concept which describes the ______.
Accroding to IUCN Red list, the status of Antilope is ____________.
What are the major factors that are responsible for the loss of biodiversity? What steps are needed to prevent them?
What is common to lantana Eichhomia and African catfish?
Explain the concept of "co-extinction" by taking two examples.
How many Biodiversity hotspots have been identified around the world?
There was a loss of biodiversity in the ecosystem due to a new construction project in that area. What would be its impact on the ecosystem? State any three.
List any three major causes of loss of biodiversity.
Name any two biodiversity hot spots in India.
Gametes of threatened species can be preserved in viable and fertile conditions for long periods using ______.
Western Ghats have a large number of plant and animal species that are not found anywhere else. Which of the following terms will you use to notify such species?
When a species goes extinct in one area, it is often desirable to re-introduce the species from other populations. A major problem with this approach is that ______.
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?
Match the species in Column I with its category in Column II.
| Column I | Column II |
| A. Rare species | I. No species |
| B. Vulnerable species | II. Facing a high risk of extinction |
| C. Endangered species | III. Localised species |
| D. Extinct species | IV. Species under threat |
Choose the correct answer from the options given below.
Which one of the following is a pair of endangered species?
Which one of the following groups faces maximum threat of extinction?
Give definitions of Extinct species.
Give definitions of Invasive species.
Which one of the following is NOT one of the 'Evil Quartet' responsible for the loss of biodiversity?
These are regarded as major causes of biodiversity loss:
- Over exploitation
- Co-extinction
- Mutation
- Habitat loss and fragmentation
- Migration
Choose the correct option:
