Biodiversity and Conservation — NEET Biology Questions 2026

In situ conservation protects entire habitats, ensuring preservation of species, their interactions, and ecological processes.

Statement IV is incorrect e linhas: fungi are abundant, but prokaryotes are not well documented, and the plant-to-animal ratio is reversed.

Bioprospecting explores biological diversity for genetic or molecular discoveries with high commercial value.

NCERT states “When a host fish species becomes extinct, its unique assemblage of parasites also meets the same fate.” Both statements are true from NCERT. The Reason provides a specific example that explains the mechanism of cascading effects - host extinction directly leads to dependent species extinction, demonstrating how one extinction triggers others.

Let's evaluate each statement based on NCERT: S1: Correct. The NCERT states, 'Careful analysis of records shows that extinctions across taxa are not random'. S2: Incorrect. The NCERT indicates the opposite, stating 'some groups like amphibians appear to be more vulnerable to extinction' and '32 per cent of all amphibian species... face the threat of extinction'. They are among the most vulnerable, not the least. S3: Incorrect. The NCERT clearly states, 'The accelerated rates of species extinctions that the world is facing now are largely due to human activities'. S4: Correct. The NCERT mentions, 'The IUCN Red List (2004) documents the extinction of 784 species (including 338 vertebrates, 359 invertebrates and 87 plants) in the last 500 years'. S5: Correct. The 'Evil Quartet' consists of four major causes of biodiversity loss: Habitat loss and fragmentation, Over-exploitation, Alien species invasions, and Co-extinctions. The statement correctly lists three of these. Therefore, statements S1, S4, and S5 are correct. The tested concept is the pattern and causes of biodiversity loss, specifically the non-random nature of extinctions and the primary threats.