Advertisements
Advertisements
Question
What could have triggered mass extinctions of species in the past?
Advertisements
Solution
- Volcanic eruption
- Earthquake
- Extremes of temperatures
- Glaciations
- Continental drift
APPEARS IN
RELATED QUESTIONS
Very short answer type question
What do you understand by the EW category of a living being?
With the help of any one example explain Alien species invasion as one of the causes of Biodiversity losses.
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 |
Species that possess a very high risk of extinction due to population decline of about 30 - 50 % over past 10 years are categorized as _______.
What are the major factors that are responsible for the loss of biodiversity? What steps are needed to prevent them?
Which of the following is not a cause for loss of biodiversity?
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
Which of the following statements is correct?
Which of the following are major causes of species losses in a geographical region?
List any two major causes other than anthropogenic causes of the loss of biodiversity.
Explain the concept of "co-extinction" by taking two examples.
How many Biodiversity hotspots have been identified around the world?
What is the sustainable use of resources?
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?
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?
Which one of the following groups faces maximum threat of extinction?
Name any two factors responsible for the loss of biodiversity in a geographical region.
Which one of the following is NOT one of the 'Evil Quartet' responsible for the loss of biodiversity?
