Advertisements
Advertisements
प्रश्न
What is common to the species shown in figures A and B?
 |
 |
| A | B |
Advertisements
उत्तर
Both are examples for Keystone species
APPEARS IN
संबंधित प्रश्न
Substantiate with the help of one example that in an ecosystem mutualists
are also one of the major causes of biodiversity loss.
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.
Which among the following is a TRUE statement?
What are the major factors that are responsible for the loss of biodiversity? What steps are needed to prevent them?
Which of the following are major causes of species losses in a geographical region?
What does 'Red' indicate in the IUCN Red list (2004)?
Discuss one example, based on your day-to-day observations, showing how loss of one species may lead to the extinction of another.
List any two major causes other than anthropogenic causes of the loss of biodiversity.
Enlist two criteria that are used to identify a region for maximum protection as 'Biodiversity hotspots'.
Gametes of threatened species can be preserved in viable and fertile conditions for long periods using ______.
Which of the following regions of the globe exhibits highest species diversity?
Give definitions of Invasive species.
Write any three criteria on which different types of reflexes are based.
These are regarded as major causes of biodiversity loss:
- Over exploitation
- Co-extinction
- Mutation
- Habitat loss and fragmentation
- Migration
Choose the correct option:
Match List - I with List - IІ.
| List - I | List - II |
| A. The Evil Quartet | I. Cryopreservation |
| B. Ex-situ conservation | ΙI. Alien species invasion |
| C. Lantana camara | III. Causes of biodiversity losses |
| D. Dodo | IV. Extinction |
Choose the option with all correct matches.
Damage to biodiversity takes place due to natural reasons which includes the following EXCEPТ:
