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प्रश्न
Which of the following statements is correct?
पर्याय
Parthenuim is an endemic species of our country
African catfish is not a threat to indigenous catfishes.
Steller' s sea cow is an extinct animal
Lantana is popularly known as carrot grass
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उत्तर
Steller's sea cow is an extinct animal
Explanation:
The Steller's sea cow (from Russia) is a recently extinct mammal, and parthenuim (carrot grass) is an alien weed that spreads quickly and harms native species.
African catfish is likewise an alien species that has a negative impact on the growth of our native species, claires batrachus.
Another alias species, Lantana camara, is a powerful competitor of native species.
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संबंधित प्रश्न
Give any 'two' examples of endangered species
Suggest two practices giving one example of each, that help protect rare or threatened species.
Species that possess a very high risk of extinction due to rapid population decline of about 50 - 70 % over three generations is designated as ______.
The Red List of threatened species is published by ______.
Which among the following is/are the type( s) of extinction of species?
Which one of the following is a natural cause of extinction of flora and fauna?
Threatened species are those which ______.
IUCN means
What does 'Red' indicate in the IUCN Red list (2004)?
List any two major causes other than anthropogenic causes of the loss of biodiversity.
Explain the concept of "co-extinction" by taking two examples.
Though the conflict between humans and wildlife started with the evolution of man, the intensity of conflict has increased due to the activities of modern man. Justify your answer with suitable examples.
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.
Decline in the population of Indian native fishes due to introduction of Clarias gariepinus in river Yamuna can be catogoriesd as ______.
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 of the following regions of the globe exhibits highest species diversity?
Which one of the following groups faces maximum threat of extinction?
Give definitions of Extinct species.
Name any two factors responsible for the loss of biodiversity in a geographical region.
