Overexploitation & Species Extinction — NEET Biology
🔥 Predicted for NEET 2027Many species extinctions in the last 500 years (Steller's sea cow, passenger pigeon) were due to overexploitation by humans. Presently many marine fish populations around the world are over harvested, endangering the continued existence of some commercially important species.
Adjacent to a frequently-asked paragraph in the same chapter.
Match-the-Column: Column I (Cause) A. Habitat loss. B. Over-exploitation. C. Alien species invasion D. Co-extinction Column II (Example) i. Extinction of passenger pigeon ii. Nile perch in Lake Victoria iii. Obligate pollinator extinction iv. Amazon forest cleared for soy cultivation
View solution & NCERT explanation
Correct answer: D — A–iv, B–i, C–ii, D–iii
Habitat loss is illustrated by the Amazon forest being cleared for soy cultivation, destroying natural ecosystems. Over-exploitation led to the extinction of the passenger pigeon, which was hunted excessively. Alien species invasion is exemplified by the Nile perch introduced into Lake Victoria, which wiped out native fish species. Co-extinction occurs when an obligate pollinator goes extinct, causing its dependent plant species to disappear as well.
What does NCERT say about Many species extinctions last?
Has this concept appeared in NEET?
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