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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
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
Substantiate with the help of one example that in an ecosystem mutualists
are also one of the major causes of biodiversity loss.
Species that possess a very high risk of extinction due to population decline of about 30 - 50 % over past 10 years are categorized as _______.
Which of the following is/are endangered plant species?
What could have triggered mass extinctions of species in the past?
What does 'Red' indicate in the IUCN Red list (2004)?
How many Biodiversity hotspots have been identified around the world?
Enlist two criteria that are used to identify a region for maximum protection as 'Biodiversity hotspots'.
Which of the following suits hotspots in ecological terminology?
Give definitions of Extinct species.
Name any two factors responsible for the loss of biodiversity in a geographical region.
