Question 1

Which of the following best describes Darwin's concept of 'descent with modification'?

Accepted Answer

All organisms are related by descent from a common ancestor, and accumulate differences as they adapt to different environments.

Question 2

Which scientist’s work on population growth influenced Darwin’s ideas about natural selection?

Accepted Answer

Thomas Malthus

Question 3

What is the main difference between artificial selection and natural selection?

Accepted Answer

Artificial selection is driven by human choice, while natural selection is driven by environmental pressures.

Question 4

Which of the following is NOT a key feature of natural selection?

Accepted Answer

Individuals evolve during their lifetime to adapt to their environment.

Question 5

A population of bacteria is exposed to an antibiotic. After several generations, most bacteria are resistant. Which evolutionary mechanism best explains this observation?

Accepted Answer

Natural selection

Question 6

Which of the following statements about homologous structures is correct?

Accepted Answer

They are inherited from a common ancestor and may have different functions.

Question 7

Which of the following is an example of a vestigial structure in humans?

Accepted Answer

The appendix

Question 8

Why do sugar gliders (Australia) and flying squirrels (North America) look similar despite being distantly related?

Accepted Answer

They are the result of convergent evolution, adapting independently to similar environments.

Question 9

Which of the following best explains why the fossil record is important evidence for evolution?

Accepted Answer

It documents the extinction of species, the origin of new groups, and changes within groups over time.

Question 10

A scientist finds similar DNA sequences in both whales and hippos. What does this suggest about their evolutionary relationship?

Accepted Answer

They share a common ancestor.

Question 11

Which of the following is an example of direct observation of evolutionary change?

Accepted Answer

The evolution of drug-resistant bacteria

Question 12

Which principle did Lamarck propose that is NOT supported by experimental evidence?

Accepted Answer

Inheritance of acquired characteristics

Question 13

Which of the following best describes the role of environmental change in natural selection?

Accepted Answer

It can change which traits are favorable, leading to adaptation and possibly new species.

Question 14

Why are evolutionary trees useful in biology?

Accepted Answer

They reflect hypotheses about relationships among groups and help predict characteristics of organisms.

Question 15

Which of the following is a correct statement about populations and evolution?

Accepted Answer

Populations evolve over time, not individuals.

Question 16

Which of the following is an example of biogeographical evidence for evolution?

Accepted Answer

The presence of similar fossils in both South America and Australia, explained by continental drift.

Question 17

Which observation led Darwin to infer that more offspring are produced than can survive?

Accepted Answer

All species can produce more offspring than the environment can support.

Question 18

Which of the following is a correct interpretation of the phrase 'survival of the fittest' in the context of natural selection?

Accepted Answer

Individuals with traits best suited to their environment are more likely to survive and reproduce.

Question 19

Which of the following is an example of a homologous structure?

Accepted Answer

The wings of a bat and the flippers of a whale, both derived from the forelimb of a common ancestor.

Question 20

Which of the following equations best represents the concept of exponential population growth as discussed by Malthus and considered by Darwin?

Accepted Answer

$$N_t = N_0$ e$$^{rt}$$

Descent with Modification: A Darwinian View of Life (Chapter 22 Study Notes)

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