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NEET BIOLOGYBiodiversity and ConservationMedium

Question

In the 'rivet popper hypothesis', Paul Ehrlich compared the rivets in an airplane to which of the following?

A

species within a genus

B

genetic diversity

C

ecosystem

D

genera within a family

Step-by-Step Solution

, Stanford ecologist Paul Ehrlich proposed the 'rivet popper hypothesis' to explain the impact of species loss . In this analogy, an airplane represents the ecosystem, and the thousands of rivets holding the plane together represent the various species . The hypothesis suggests that while losing a single rivet (an extinction) might not initially threaten 'flight safety' (ecosystem functioning), the continued removal of rivets eventually makes the plane dangerously weak . Furthermore, the loss of rivets on the wings is compared to the loss of key species that drive major ecosystem functions, posing a much more immediate and serious threat .

Exam Context & Concepts Covered

This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Biodiversity and Conservation. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

BIOLOGYBiodiversity and Conservationpopperhypothesisehrlichcomparedrivets

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Which one of the following is not a method of in situ conservation of biodiversity?

A.Sacred Grove
B.Biosphere Reserve
C.Wildlife Sanctuary
D.Botanical Garden
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Western Ghats have a large number of plant and animal species that are not found anywhere else. Which of the following terms will you use to notify such species?

A.Endemic
B.Vulnerable
C.Threatened
D.Keystone
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Which of the following is the most important cause for animals and plants being driven to extinction?

A.Alien species invasion
B.Habitat loss and fragmentation
C.Drought and floods
D.Economic exploitation
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The Earth Summit held in Rio de Janeiro in 1992 was called:

A.for immediate steps to discontinue the use of CFCs that were damaging the ozone layer
B.to reduce CO2 emissions and global warming
C.for the conservation of biodiversity and sustainable utilization of its benefits
D.to assess the threat posed to native species by invasive weed species
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According to the observations of Alexander von Humboldt, what is the relationship between species richness and the area explored?

A.Species richness decreases with increasing area of exploration
B.Species richness increases with the increasing area, but only up to a limit
C.There is no relationship between species richness and the area explored
D.Species richness goes on increasing with increasing area of exploration
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Which of the following regions of the globe exhibits the highest species diversity?

A.Madagascar
B.Himalayas
C.Amazon forests
D.Western Ghats of India
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Give the correct descending order of organisms with reference to their estimated number found in the Amazon forest.

A.(a) > (b) > (e) > (d) > (c)
B.(a) > (c) > (d) > (b) > (e)
C.(b) > (a) > (e) > (d) > (c)
D.(b) > (a) > (c) > (e) > (d)
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The decline in the population of Indian native fishes due to the introduction of Clarias gariepinus in river Yamuna can be categorised as:

A.Co-extinction
B.Habitat fragmentation
C.Over exploitation
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