Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETBotanyBiodiversity and its Conservation

What are the reasons for high extinction rates at present?

Options

  1. AHabitat loss and fragmentation
  2. BOver:exploitation
  3. CBiological invasions
  4. DAll of the above

Correct answer

D. All of the above

Step-by-step solution

It is believed that communities with high diversity tend to be less variable, more productive and more resistant to biological invasions. Earth’s fossil history reveals incidence of mass extinctions in the past, but the present rates of extinction, largely attributed to human activities, are 100 to 1000 times higher. Nearly 700 species have become extinct in recent times and more than 15,500 species (of which > 650 are from India) currently face the threat of extinction. The causes of high extinction rates at prese

Practice Biodiversity and its Conservation on Quantrex Academy →

More from Biodiversity and its Conservation

Match the following. 2019One of the following statements is incorrect with reference to biodiversity. Identify it. 2016One out of the following is not responsible for biodiversity loss. 2015The total number of biodiversity hotspots in the world are 2014Which of the following statements is not true? 2014Newly formed Biosphere Reserve of India (2013) is 2014India is one of the twelve megadiversity countries with of genetic resources of the world. 2013Assertion : Now-a-days, the biodiversity is declining with an accelerated rate. Reason : Exotic species are considered to be a major cause of extinction of species. 2013 Full Biodiversity and its Conservation list All NEET PYQs