Question 1

Which of the following best describes homologous structures?

Accepted Answer

Structures in different species that are similar due to shared ancestry, even if their functions differ, such as the forelimbs of humans and whales.

Question 2

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 3

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 4

Which of the following best defines a population in ecological terms?

Accepted Answer

All the members of a single species living in a specific geographic area

Question 5

Which reproductive barrier is described by two species that breed at different times of the year?

Accepted Answer

Temporal isolation

Question 6

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

Accepted Answer

First plants and fungi established on land

Question 7

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

Accepted Answer

Tundra

Question 8

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 9

Which of the following is an example of mutualism?

Accepted Answer

Bees pollinating flowers while obtaining nectar

Question 10

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

Accepted Answer

Mutation

Question 11

A scientist observes that two frog species live in the same pond but breed in different microhabitats. Which type of reproductive isolation is this?

Accepted Answer

Habitat isolation

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 fertility

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 interconnected food chains.

Question 15

Which of the following is an example of artificial selection?

Accepted Answer

Humans breeding dogs for specific traits

Question 16

Which era is known for the first appearance of mammals and flowering plants?

Accepted Answer

Mesozoic era

Question 17

A new species of plant is discovered that can only reproduce with itself and not with closely related species due to incompatible pollen. Which reproductive barrier is this?

Accepted Answer

Gametic isolation

Question 18

Which of the following best describes ecological succession?

Accepted Answer

The gradual change in species composition in a community over time

Question 19

Which of the following is a characteristic of invasive species?

Accepted Answer

They often outcompete native species and disrupt local ecosystems

Question 20

Which of the following best describes the gene pool of a population?

Accepted Answer

The set of all genes, including all the different alleles, present in a population

Evolution, Speciation, and Ecology: Study Guide Notes

Study Guide - Practice Questions

Study Guide - Flashcards