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प्रश्न
What is common to the following plants: Nepenthes, Psilotum, Rauwolfia and Aconitum?
पर्याय
All are ornamental plants
All are phylogenic link species
All are prone to over exploitation
All are exclusively present in the Eastern Himalayas
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उत्तर
All are prone to over exploitation
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संबंधित प्रश्न
Give any 'two' examples of endangered species
With the help of any one example explain Alien species invasion as one of the causes of Biodiversity losses.
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 among the following is/are the type( s) of extinction of species?
Match the following columns.
| Column - I | Column - II |
| (i) Dodo | (a) Africa |
| (ii) Ouagga | (b) Russia |
| (iii) Thylacine | (c) Mauritius |
| (iv) Stellar's sea cow | (d) Australia |
Choose the correct match from the following
What is common to lantana Eichhomia and African catfish?
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.
Explain the concept of "co-extinction" by taking two examples.
Consider the following statements:
- Statement I: Endemism and accelerated habitat loss are characteristics of biodiversity hotspots.
- Statement II: Gene bank is an in-situ method of biodiversity conservation.
Choose the correct answer from the options given below.
Decline in the population of Indian native fishes due to introduction of Clarias gariepinus in river Yamuna can be catogoriesd as ______.
Many species like Stellar's Sea cow and passenger pigeon have been driven to the brink of extinction. Which of the following describes this situation?
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.
What is ex-situ conservation?
Which one of the following groups faces maximum threat of extinction?
What are the reasons for loss of biodiversity?
Name any two factors responsible for the loss of biodiversity in a geographical region.
These are regarded as major causes of biodiversity loss:
- Over exploitation
- Co-extinction
- Mutation
- Habitat loss and fragmentation
- Migration
Choose the correct option:
