Question 1

Which of the following best describes a homologous structure?

Accepted Answer

A structure that is similar in different species because of shared ancestry.

Question 2

Which of the following is the correct order of taxonomic categories from most specific to most general?

Accepted Answer

Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain

Question 3

A population of bacteria is exposed to an antibiotic. After several generations, most bacteria are resistant to the antibiotic. Which process best explains this change?

Accepted Answer

Natural selection

Question 4

Which of the following is an example of temporal isolation?

Accepted Answer

Two species of frogs breed in the same pond, but one breeds in early spring and the other in late summer.

Question 5

Which of the following best defines a gene pool?

Accepted Answer

The set of all alleles present in a population.

Question 6

Which of the following events occurred first in the history of life on Earth?

Accepted Answer

First prokaryotic cells appeared

Question 7

Which biome is characterized by permafrost, low precipitation, and short growing seasons?

Accepted Answer

Tundra

Question 8

Which of the following is a postzygotic reproductive barrier?

Accepted Answer

Reduced hybrid fertility

Question 9

In a food web, which organisms are responsible for breaking down dead organic matter and recycling nutrients?

Accepted Answer

Decomposers

Question 10

Which of the following best describes the process of primary succession?

Accepted Answer

The colonization of a barren habitat with no soil by living organisms.

Question 11

Which species concept defines a species as a group of organisms that can interbreed and produce fertile offspring?

Accepted Answer

Biological species concept

Question 12

Which of the following is an example of mutualism?

Accepted Answer

A bee pollinating a flower while feeding on its nectar

Question 13

Which of the following best describes microevolution?

Accepted Answer

Changes in allele frequencies within a population over time.

Question 14

Which of the following is a correct statement about natural selection?

Accepted Answer

Natural selection acts on heritable variation within a population.

Question 15

Which of the following is the correct chronological order for the appearance of these groups in the fossil record?

Accepted Answer

Plants and fungi, arthropods, reptiles, flowering plants

Question 16

A scientist is studying a population of finches on an island. She observes that birds with larger beaks are more likely to survive during drought years because they can crack open tough seeds. Which concept is best illustrated by this scenario?

Accepted Answer

Natural selection

Question 17

Which of the following is a characteristic of the Cenozoic era?

Accepted Answer

Major diversification of mammals and birds

Question 18

Which of the following equations correctly represents the Hardy-Weinberg equilibrium for a gene with two alleles, $$p$$ and $$q$$?

Accepted Answer

$$p^2 + 2pq$$ + $$q^2 = 1$

Question 19

Which of the following best describes the role of detritivores in an ecosystem?

Accepted Answer

They feed on dead organic matter, aiding in decomposition.

Question 20

A population of insects is separated by a newly formed river, and over time, the two groups evolve into distinct species. Which type of speciation does this scenario illustrate?

Accepted Answer

Allopatric speciation

Evolution, Speciation, and Ecology: Study Guide Notes

Study Guide - Practice Questions

Study Guide - Flashcards