UNIVERSITY OF ALABAMA — BSC 108
BSC 108 Final Exam
Practice Question Bank
Comprehensive Review with Biological Rationales
Introduction to Biology — Evolution, Ecology, Speciation, Population
Dynamics
85 Comprehensive Questions with Verified Answers
Edition 1 · August 2026
✓ Institution Verification
VERIFIED This document was independently verified as belonging to University of
Alabama — BSC 108 Introduction to Biology. This comprehensive review covers
microevolution, macroevolution, speciation, ecology, population dynamics, community
ecology, ecosystem ecology, and conservation biology.
Table of Contents
,1. Instructions for Use 2
2. Practice Questions with Answers & Rationales 2
3. Appreciation & Review 12
BSC 108 · University of Alabama Page 1
,BSC 108 FINAL EXAM STUDY GUIDE INSTRUCTIONS & PRACTICE QUESTIONS
How to Use This Guide
Read each stem carefully, choose your answer, then review the rationale directly below. Each
correct option is marked, and every wrong option is explained so you understand why it's
incorrect — not just that it is. These questions are designed to mirror the final exam format
and biological reasoning required for BSC 108.
Category: Biology — Evolution, Ecology, Speciation, Population Dynamics
1 Microevolution is defined as:
A Changes in allele frequencies within populations (often associated with adaptation)
B Major changes in the history of life that generate biological diversity
C The origin of new species
D Changes in the Earth's geological formations
Why A is correct: Microevolution refers to changes in allele frequencies within populations
over generations, often associated with adaptation to local environments.
B — This describes macroevolution.
C — This describes speciation.
D — This is not related to evolution.
, 2 Macroevolution is defined as:
A Changes in allele frequencies within populations
B Major changes in the history of life that generates biological diversity and the origin
of new species
C Small changes within a species
D Changes in individual organisms
Why B is correct: Macroevolution refers to major changes in the history of life that
generate biological diversity and the origin of new species over long periods.
A — This describes microevolution.
C — This describes microevolution.
D — Individual organisms do not evolve.
3 A species is best defined as:
A A group of organisms that live in the same area
B A group of organisms that can successfully breed to produce fertile offspring
C A group of organisms with similar physical characteristics
D A group of organisms that share the same habitat
Why B is correct: A species is a group of organisms that can successfully breed to produce
fertile offspring. This is the biological species concept.
A — This describes a population.
C — Physical similarity alone does not define a species.
D — Sharing a habitat does not define a species.
BSC 108 Final Exam
Practice Question Bank
Comprehensive Review with Biological Rationales
Introduction to Biology — Evolution, Ecology, Speciation, Population
Dynamics
85 Comprehensive Questions with Verified Answers
Edition 1 · August 2026
✓ Institution Verification
VERIFIED This document was independently verified as belonging to University of
Alabama — BSC 108 Introduction to Biology. This comprehensive review covers
microevolution, macroevolution, speciation, ecology, population dynamics, community
ecology, ecosystem ecology, and conservation biology.
Table of Contents
,1. Instructions for Use 2
2. Practice Questions with Answers & Rationales 2
3. Appreciation & Review 12
BSC 108 · University of Alabama Page 1
,BSC 108 FINAL EXAM STUDY GUIDE INSTRUCTIONS & PRACTICE QUESTIONS
How to Use This Guide
Read each stem carefully, choose your answer, then review the rationale directly below. Each
correct option is marked, and every wrong option is explained so you understand why it's
incorrect — not just that it is. These questions are designed to mirror the final exam format
and biological reasoning required for BSC 108.
Category: Biology — Evolution, Ecology, Speciation, Population Dynamics
1 Microevolution is defined as:
A Changes in allele frequencies within populations (often associated with adaptation)
B Major changes in the history of life that generate biological diversity
C The origin of new species
D Changes in the Earth's geological formations
Why A is correct: Microevolution refers to changes in allele frequencies within populations
over generations, often associated with adaptation to local environments.
B — This describes macroevolution.
C — This describes speciation.
D — This is not related to evolution.
, 2 Macroevolution is defined as:
A Changes in allele frequencies within populations
B Major changes in the history of life that generates biological diversity and the origin
of new species
C Small changes within a species
D Changes in individual organisms
Why B is correct: Macroevolution refers to major changes in the history of life that
generate biological diversity and the origin of new species over long periods.
A — This describes microevolution.
C — This describes microevolution.
D — Individual organisms do not evolve.
3 A species is best defined as:
A A group of organisms that live in the same area
B A group of organisms that can successfully breed to produce fertile offspring
C A group of organisms with similar physical characteristics
D A group of organisms that share the same habitat
Why B is correct: A species is a group of organisms that can successfully breed to produce
fertile offspring. This is the biological species concept.
A — This describes a population.
C — Physical similarity alone does not define a species.
D — Sharing a habitat does not define a species.
