Geography · Biogeography
Assertion (A): Wallace's Line demarcates abrupt faunal discontinuities between Sundaland and Sahul. Reason (R): Deep oceanic trenches persisted during Pleistocene lowstands, preventing biotic exchange despite lowered sea levels.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A is false, but R is true.
- 2A is true, but R is false.
- 3Both A and R are true, but R is not the correct explanation of A.
- 4Both A and R are true, and R is the correct explanation of A.✓
Correct answer
Both A and R are true, and R is the correct explanation of A.
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