How many mass extinctions have occurred since the origin and diversification of life on Earth?

Category: QuestionsHow many mass extinctions have occurred since the origin and diversification of life on Earth?
Editor">Editor Staff asked 3 weeks ago

How many mass extinctions have occurred since the origin and diversification of life on Earth?
 
(a) 2
 
(b) 8
 
(c) 3
 
(d) 5
 
The question was posed to me in semester exam.
 
My doubt stems from Loss of Biodiversity topic in division Biodiversity and Conservation of Biology – Class 12

1 Answers
Editor">Editor Staff answered 3 weeks ago

Right answer is (d) 5
 
The best explanation: The Earth went through five episodes of mass extinction of species since the origin and diversification of life (>3 billion years). Every mass extinction has led to more than 80% loss of species on Earth.