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Solution


Q.

In 'Rivet Popper hypothesis', Paul Ehrlich compared the rivets in an airplane to                  [2023]
1 species within a genus  
2 genetic diversity  
3 ecosystem  
4 genera within a family  

Ans.

(1)

The Rivet popper hypothesis was proposed by Stanford ecologist Paul Ehrlich as an analogy. He compared the rivets in an airplane to species within a genus. According to him, in an airplane (ecosystem), all parts are joined together using thousands of rivets (species). If every passenger travelling in it starts popping a rivet (causing a species to become extinct), it may not affect flight safety (proper functioning of the ecosystem) initially, but as more and more rivets are removed, the plane becomes dangerously weak over a period of time. Loss of rivets on the wings (species that drive major ecosystem functions) is obviously a more serious threat to flight safety than loss of a few rivets on the seats or windows inside the plane.