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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
What are the major causes of species losses in a geographical region?
Can you think of a situation where we deliberately want to make a species extinct? How would you justify it?
Give any 'two' examples of endangered species
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 _______.
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 an in situ conservation method for national genetic resources?
Threatened species are those which ______.
What are the major factors that are responsible for the loss of biodiversity? What steps are needed to prevent them?
What could have triggered mass extinctions of species in the past?
Of the four major causes for the loss of biodiversity (Alien species invasion, habitat loss and fragmentation, over-exploitation and co-extinctions which according to you is the major cause for the loss of biodiversity? Give reasons in support.
Explain the concept of "co-extinction" by taking two examples.
How can you, as an individual, prevent the loss of biodiversity?
"Forests provide intangible benefits to us." Explain by taking three different areas, how.
Which of the following suits hotspots in ecological terminology?
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.
Give definitions of Extinct species.
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?
