Question 1

Which of the following best describes the two major concepts that make up Darwinian evolution?

Accepted Answer

Descent with modification and natural selection

Question 2

Which of the following is NOT one of the five major lines of evidence for descent from a common ancestor?

Accepted Answer

Random genetic drift

Question 3

A paleontologist discovers a fossil embedded in sedimentary rock. What does the term 'strata' refer to in this context, and how does it relate to geologic time?

Accepted Answer

'Strata' are layers of sedimentary rock, with deeper layers generally being older, thus providing a timeline of Earth's history.

Question 4

Which of the following best explains why the shared genetic code of all life on Earth is considered a homology?

Accepted Answer

It is a trait inherited from a common ancestor, indicating evolutionary relatedness among all living organisms.

Question 5

Which of the following scenarios best illustrates the concept of hierarchical organization in life on Earth?

Accepted Answer

Species are grouped into increasingly inclusive categories such as genus, family, order, class, phylum, and kingdom.

Question 6

Which of the following is the best definition of 'fitness' in the context of natural selection?

Accepted Answer

The ability of an organism to survive and reproduce, passing its genes to the next generation.

Question 7

Which of the following is NOT a condition required for natural selection to occur?

Accepted Answer

All individuals must have identical fitness

Question 8

A population of lizards is moved to a new island. Over generations, they develop longer legs, which help them escape predators. This is an example of:

Accepted Answer

Adaptation

Question 9

Which of the following best distinguishes adaptation from acclimation?

Accepted Answer

Adaptation is a heritable change in a population over generations; acclimation is a non-heritable change in an individual during its lifetime.

Question 10

Which of the following is an example of a pre-zygotic reproductive isolation mechanism?

Accepted Answer

Temporal isolation, where two species breed at different times of the year

Question 11

Which process is most likely responsible for the rapid diversification of finch species on the Galápagos Islands, each adapted to different food sources?

Accepted Answer

Adaptive radiation

Question 12

Which of the following best describes the difference between homology and analogy?

Accepted Answer

Homology is similarity due to shared ancestry; analogy is similarity due to convergent evolution.

Question 13

A phylogenetic tree is best described as:

Accepted Answer

A hypothesis about the evolutionary relationships among species

Question 14

Why is it important to use many characters (traits) when building a phylogenetic tree?

Accepted Answer

Using many characters reduces the impact of convergence and increases the accuracy of the tree.

Question 15

Which of the following statements about the molecular clock is correct?

Accepted Answer

The molecular clock uses mutation rates and fossil ages to estimate the timing of evolutionary events.

Question 16

Which of the following processes allows bacteria to acquire new genetic material from their environment, and why is this important?

Accepted Answer

Transformation; it increases genetic diversity and can lead to new traits such as antibiotic resistance.

Question 17

Which of the following statements about the relationship between the three domains of life is correct?

Accepted Answer

Domain Archaea is more closely related to Domain Eukarya than to Domain Bacteria.

Question 18

Which of the following best describes the nutritional mode of fungi?

Accepted Answer

Fungi are heterotrophs that absorb nutrients from their environment.

Question 19

Which of the following is true regarding fungal reproduction?

Accepted Answer

Fungi can reproduce both sexually and asexually, depending on environmental conditions.

Question 20

Which of the following characteristics is shared by all chordates?

Accepted Answer

Presence of a notochord, dorsal hollow nerve cord, pharyngeal slits, and post-anal tail at some stage of development.

Descent with Modification, Phylogeny, and Diversity of Life: Study Guide Notes

Study Guide - Practice Questions

Study Guide - Flashcards