Brooks Biodiversity
Biodiversity (Unit 6) Study Guide
Exam Graded A+ 2026
Biodiversity -Correct Answer ✔-Describes the variety of life across all levels of
ecological organization
Types of biodiversity: Genetic diversity
Species diversity
Ecosystem diversity -Correct Answer ✔-Involves DNA differences among
organisms
Involves the number of species in a given area
Involves the variety of habitats/ecosystems in a given area
Type of biodiversity most often used among scientists -Correct Answer ✔-Species
diversity
3 ways in which scientists classify species -Correct Answer ✔-Physical
appearance, genetic makeup, and ability to mate and produce fertile offspring
The more taxonomic levels two organisms have in common -Correct Answer ✔-the
more closely related they are
Subspecies -Correct Answer ✔-Populations with genetically based characteristics
that differ area to area.
Which group is known for having more known species than any other group -
Correct Answer ✔-Insects
Even though scientists have classified approximately 2 million species, they
estimate between 5-30 million species on Earth. 3 reasons for this conclusion -
Correct Answer ✔-1. some areas of earth are unexplored
2. many are tiny and easy to overlook
3. many are difficult to identify and tell apart from other species
Brooks Biodiversity
Biodiversity (Unit 6) Study Guide
Exam Graded A+ 2026
Biodiversity -Correct Answer ✔-Describes the variety of life across all levels of
ecological organization
Types of biodiversity: Genetic diversity
Species diversity
Ecosystem diversity -Correct Answer ✔-Involves DNA differences among
organisms
Involves the number of species in a given area
Involves the variety of habitats/ecosystems in a given area
Type of biodiversity most often used among scientists -Correct Answer ✔-Species
diversity
3 ways in which scientists classify species -Correct Answer ✔-Physical
appearance, genetic makeup, and ability to mate and produce fertile offspring
The more taxonomic levels two organisms have in common -Correct Answer ✔-the
more closely related they are
Subspecies -Correct Answer ✔-Populations with genetically based characteristics
that differ area to area.
Which group is known for having more known species than any other group -
Correct Answer ✔-Insects
Even though scientists have classified approximately 2 million species, they
estimate between 5-30 million species on Earth. 3 reasons for this conclusion -
Correct Answer ✔-1. some areas of earth are unexplored
2. many are tiny and easy to overlook
3. many are difficult to identify and tell apart from other species
Brooks Biodiversity
