Habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction are caus

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NEET is a competitive examination conducted in India. This question is from the 2022 NEET Biology paper.

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This NEET 2022 Biology question has a easy difficulty level and is marked as an important question.

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Question

Habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction are causes for:
(1) Natality (2) Population explosion (3) Competition (4) Biodiversity loss

Accepted Answer

Correct Answer: D — Biodiversity lossStep-by-step Solution:The four major causes of biodiversity loss are collectively referred to as the "Evil Quartet":Habitat loss and fragmentation — destruction of natural habitats (e.g., deforestation) is the single greatest cause of biodiversity loss.Over exploitation — unsustainable harvesting of wild species (e.g., hunting, fishing).Alien species invasion — introduced non-native species outcompete or predate native species (e.g., Nile perch in Lake Victoria).Co-extinction — when a species goes extinct, other species that depend on it (mutualisms, host-parasite) also go extinct.Why other options are wrong: Natality (birth rate), population explosion, and competition are population dynamics terms; they are not consequences of the four factors listed.Key Concept: Evil Quartet (causes of biodiversity loss): (1) Habitat loss and fragmentation, (2) Over exploitation, (3) Alien/invasive species, (4) Co-extinctions. These are the primary drivers of the current sixth mass extinction event.

Habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction are causes for: (1) Natality (2) Population explosion (3) Competition (4) Biodiversity loss

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Habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction are causes for: (1) Natality (2) Population explosion (3) Competition (4) Biodiversity loss

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