Question 1

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

Accepted Answer

Species accumulate differences from their ancestors as they adapt to different environments over time.

Question 2

Which observation led Darwin to propose that natural selection acts on individuals within a population?

Accepted Answer

Individuals with favorable inherited traits are more likely to survive and reproduce.

Question 3

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

Accepted Answer

The forelimbs of a human and the forelimbs of a whale.

Question 4

What is the primary source of genetic variation in a population?

Accepted Answer

Mutation and gene duplication.

Question 5

Which process is described by the following equation: $p^2 + 2pq + q^2 = 1$ ?

Accepted Answer

Hardy-Weinberg equilibrium for allele frequencies.

Question 6

A population of beetles experiences a sudden reduction in size due to a flood, leaving only a few survivors. Which evolutionary mechanism is most likely to affect the genetic diversity of the population?

Accepted Answer

Bottleneck effect

Question 7

Which of the following statements about endemic species is correct?

Accepted Answer

Endemic species are only found in one specific location.

Question 8

Which evolutionary process is most likely responsible for the development of drug-resistant bacteria in hospitals?

Accepted Answer

Natural selection

Question 9

Which of the following best explains why wings in insects are considered a key to their evolutionary success?

Accepted Answer

Wings are extensions of the cuticle, allowing insects to colonize new environments without losing legs.

Question 10

Which of the following is NOT a requirement for Hardy-Weinberg equilibrium?

Accepted Answer

Small population size

Question 11

A small group of lizards migrates to a new island and establishes a population. Over time, their allele frequencies differ from the original population. This scenario illustrates:

Accepted Answer

Founder effect

Question 12

Which of the following is an example of convergent evolution?

Accepted Answer

The similar streamlined body shapes of dolphins (mammals) and sharks (fish).

Question 13

Which layer gives rise to muscles in triploblastic animals?

Accepted Answer

Mesoderm

Question 14

Which of the following is a correct sequence in the Linnaean hierarchy from most inclusive to least inclusive?

Accepted Answer

Domain, kingdom, phylum, class, order, family, genus, species

Question 15

Which of the following statements about mammals is TRUE?

Accepted Answer

All mammals have mammary glands that produce milk for their offspring.

Question 16

Which evolutionary event was crucial for the colonization of land by vertebrates?

Accepted Answer

Evolution of limbs and digits

Question 17

Which of the following is a function of the pevic girdle in tetrapods?

Accepted Answer

Connects the hind limbs to the rest of the body

Question 18

Which of the following is a direct observation of evolution occurring today?

Accepted Answer

The evolution of drug-resistant bacteria in response to antibiotics

Question 19

Which process tends to reduce genetic variation among populations over time?

Accepted Answer

Gene flow

Question 20

Which of the following is a vestigial structure?

Accepted Answer

The human appendix

Evolution and Animal Diversity: Structured Study Notes for General Biology

Study Guide - Practice Questions

Study Guide - Flashcards