Question:
Speciation rate is influenced by a number of factors except:
Speciation rate is influenced by a number of factors except:
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Speciation is âBirthâ of a species; Extinction is âDeathâ. Death doesn't determine the rate of birth.
Updated On: May 28, 2026
- Sexual selection
- Dispersal ability
- Species richness
- Extinction
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Speciation rate refers to the speed at which new distinct species are formed.
Step 2: Meaning
Factors influencing this rate involve mechanisms that encourage reproductive isolation or genetic divergence.
Step 3: Analysis
Sexual selection accelerates divergence. Dispersal ability affects how populations isolate. Species richness influences available niches. Extinction is the cessation of a species, which is the opposite of species formation.
Step 4: Conclusion
While extinction affects total biodiversity, it is not a factor driving the rate of new species formation.
Final Answer: (4)
Speciation rate refers to the speed at which new distinct species are formed.
Step 2: Meaning
Factors influencing this rate involve mechanisms that encourage reproductive isolation or genetic divergence.
Step 3: Analysis
Sexual selection accelerates divergence. Dispersal ability affects how populations isolate. Species richness influences available niches. Extinction is the cessation of a species, which is the opposite of species formation.
Step 4: Conclusion
While extinction affects total biodiversity, it is not a factor driving the rate of new species formation.
Final Answer: (4)
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