Question 1

Which of the following best describes a homologous structure?

Accepted Answer

A structure that is similar in different species due to shared ancestry, even if it serves different functions.

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 of the bacteria are resistant to the antibiotic. Which process best explains this outcome?

Accepted Answer

Natural selection

Question 4

Which of the following is the ultimate source of all new alleles in a population?

Accepted Answer

Mutation

Question 5

Which of the following best describes the biological species concept?

Accepted Answer

A group of populations whose members can interbreed and produce fertile offspring.

Question 6

Which of the following is an example of a prezygotic reproductive barrier?

Accepted Answer

Gametic isolation

Question 7

During which era did the first mammals and flowering plants appear on land?

Accepted Answer

Mesozoic era

Question 8

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

Accepted Answer

Tundra

Question 9

Which of the following best describes mutualism?

Accepted Answer

A relationship where both organisms benefit.

Question 10

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

Accepted Answer

First plants and fungi become established on land

Question 11

A population of frogs is split by a newly formed river, and over time, the two groups evolve into separate species. Which type of speciation is this an example of?

Accepted Answer

Allopatric speciation

Question 12

Which of the following best describes a detritivore?

Accepted Answer

An organism that consumes dead organic matter.

Question 13

Which of the following is a postzygotic reproductive barrier?

Accepted Answer

Reduced hybrid viability

Question 14

Which of the following best describes the difference between a food chain and a food web?

Accepted Answer

A food chain shows a single pathway of energy flow, while a food web shows multiple interconnected pathways.

Question 15

Which of the following is an example of habitat isolation?

Accepted Answer

Two species live in the same area but occupy different habitats and rarely encounter each other.

Question 16

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

Accepted Answer

The colonization of a barren habitat with no soil by pioneer species.

Question 17

Which of the following is a correct sequence for the appearance of major groups in the geologic record?

Accepted Answer

Plants and fungi → arthropods → reptiles → flowering plants

Question 18

Which of the following best describes the ecological niche of a species?

Accepted Answer

The role a species plays in its ecosystem, including its use of resources and relationships with other species.

Question 19

Which of the following is a likely consequence of introducing an invasive species into a new ecosystem?

Accepted Answer

Disruption of native species and possible decline in biodiversity.

Question 20

A scientist is studying a group of organisms that are morphologically similar but do not interbreed in nature. Which species concept is the scientist most likely using?

Accepted Answer

Morphological species concept

Evolution, Speciation, and Ecology: Study Guide Notes

Study Guide - Practice Questions

Study Guide - Flashcards