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प्रश्न
Which of the following statements is correct?
विकल्प
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
Species that possess a very high risk of extinction due to rapid population decline of about 50 - 70 % over three generations is designated as ______.
Which among the following is an exception to invasive species?
Which one of the following is a natural cause of extinction of flora and fauna?
What is common to lantana Eichhomia and African catfish?
The extinction of passenger pigeon was due to ______.
Which of these is NOT amongst the effects of loss of biodiversity?
What is common to the species shown in figures A and B?
 |
 |
| A | B |
Discuss one example, based on your day-to-day observations, showing how loss of one species may lead to the extinction of another.
What criteria should one use in categorizing a species as threatened?
List any two major causes other than anthropogenic causes of the loss of biodiversity.
How many Biodiversity hotspots have been identified around the world?
"Forests provide intangible benefits to us." Explain by taking three different areas, how.
The species placed in CR category is ______.
Which of the following suits hotspots in ecological terminology?
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?
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:
