BIO 1500 chapter 6
1. Some measurements of biodiversity include numbers of species, genetic
diversity, chemical diversity, and ecosystem diversity (TRUE OR FALSE): TRUE
2. biology is the discipline that seeks to preserve life: con-
servation
3. species into different habitats: radiate
4. Product of a complex -> rapid (couple million
common ancestor
years) branching of a phylogenetic clade into many closely related species
through speciation.: adaptive radiation
5. What is a clade?: Grouping of organisms that are monophyletic - that is, composed of a
and all its lineal descendants - on a phylogenetic tree
6. Perch population grew by consuming cichlids, driving 200 species to point of
1/6
, : extinction
7. is a natural process that has been occurring since life first
evolved: Extinction
8. Extinction is a natural process of (rate of 1 million
species/year): macroevolution
9. record reveals that there have been periods of mass
in history with much higher rates of species loss: fossil, 5, extinction
10. Rate of species loss today is comparable to those periods of mass extinction
(TRUE OR FALSE): TRUE
11. The major difference in cause between the previous mass extinctions and
the current extinction is...: human activity.
2/6
, 12. The biological concept states that a species is a group of popula-
tions whose members have the potential to in nature and
produce viable : THEY DO NOT BREED SUCCESSFULLY
WITH OTHER POPULATIONS: species, interbreed, fertile offspring
13. reproductive isolation barriers maintain the integrity of a species by reduc-
ing , between related species.: gene flow (keep species distinct by limiting
the exchange of genetic material between them.)
14. prevent members of different species from
producing viable or fertile offspring: reproductive isolation
3/6
1. Some measurements of biodiversity include numbers of species, genetic
diversity, chemical diversity, and ecosystem diversity (TRUE OR FALSE): TRUE
2. biology is the discipline that seeks to preserve life: con-
servation
3. species into different habitats: radiate
4. Product of a complex -> rapid (couple million
common ancestor
years) branching of a phylogenetic clade into many closely related species
through speciation.: adaptive radiation
5. What is a clade?: Grouping of organisms that are monophyletic - that is, composed of a
and all its lineal descendants - on a phylogenetic tree
6. Perch population grew by consuming cichlids, driving 200 species to point of
1/6
, : extinction
7. is a natural process that has been occurring since life first
evolved: Extinction
8. Extinction is a natural process of (rate of 1 million
species/year): macroevolution
9. record reveals that there have been periods of mass
in history with much higher rates of species loss: fossil, 5, extinction
10. Rate of species loss today is comparable to those periods of mass extinction
(TRUE OR FALSE): TRUE
11. The major difference in cause between the previous mass extinctions and
the current extinction is...: human activity.
2/6
, 12. The biological concept states that a species is a group of popula-
tions whose members have the potential to in nature and
produce viable : THEY DO NOT BREED SUCCESSFULLY
WITH OTHER POPULATIONS: species, interbreed, fertile offspring
13. reproductive isolation barriers maintain the integrity of a species by reduc-
ing , between related species.: gene flow (keep species distinct by limiting
the exchange of genetic material between them.)
14. prevent members of different species from
producing viable or fertile offspring: reproductive isolation
3/6
