Lesson Worksheet: Speciation Biology
In this worksheet, we will practice explaining the process by which new, separate species can arise from a founding population.
Q1:
Which scientist spent many years gathering evidence from natural populations to support the theory of speciation?
- AWallace
- BMendel
- CFranklin
- DWatson
- EDarwin
Q2:
If a population cannot adapt to a new environment, it becomes extinct. Which of the following correctly defines extinction?
- AMost individuals of a species are dead.
- BThe genetic variation of a population is drastically reduced.
- CAll individuals of a species are permanently lost.
- DThe death rate of a population is higher than the birth rate.
- EA species is at risk of not having any surviving members.
Q3:
In speciation, what conditions change and provide the selective pressure?
- ACommunicative
- BTemporary
- CEnvironmental
- DPhenotypic
- EGenetic
Q4:
Fill in the blanks: In isolated populations, different mean different are advantageous and are therefore selected for.
- Agenomes, genes
- Balleles, environments
- Cconditions, environments
- Denvironments, alleles
- Ealleles, genes
Q5:
What is the process by which two species evolve from a single-origin species due to isolation?
- ASpecialization
- BDifferentiation
- CClassification
- DSpeciation
- EDetermination
Q6:
In speciation, which of the following options best describes when the separated population and the original population are considered to be two distinct species?
- AWhen individuals from each group specialize to eat a certain food source
- BWhen individuals from each group look different enough
- CWhen there has been one set of offspring from every individual in the new group
- DWhen individuals from each group can no longer reproduce to create fertile offspring
- EWhen individuals from each group can no longer mate
Q7:
Which scientific term is given to the following definition: A group of similar organisms that reproduce to give fertile offspring?
- AKingdom
- BSpecies
- CGenus
- DClass
- EFamily
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