Biology NEET Previous Year Question Paper NEET 2026 Previous Year Question Paper Single Correct MCQ
Published on: August 21, 2026

Since the origin and diversification of life on Earth, there have been five episodes of mass extinction of species. How is the sixth extinction, which is in progress, different from the previous episodes?

A
The current species extinction rates are far lower than those in previous episodes.
B
The present species extinction rates are 100 to 1000 times faster than in the pre-human times.
C
The present net species extinction rate is zero.
D
The current species extinction rate is nearly 10 times faster than that in previous episodes.

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Text Solution

Verified by Experts
The correct answer is:
B

100 to 1000 times faster: Current extinction rates are estimated to be this much higher than pre-human (natural background) levels.

Key Difference: Unlike previous extinctions caused by natural disasters, the Sixth Extinction is driven by human activities (anthropogenic factors).

& : Incorrect; the current rate is much faster, not lower or just 10 times faster.

: Incorrect; many species are currently vanishing.

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