Q: Which of the following is a correct scientific name, and why?

$$\textit{Homo sapiens}$$; the genus is capitalized and the species is lowercase, both italicized.

Question 1

Which of the following best describes Darwin's theory of evolution by natural selection?

Accepted Answer

Individuals with heritable traits that increase survival and reproduction are more likely to pass those traits to the next generation.

Question 2

Which of the following is an example of a homologous structure, and why is it significant in evolutionary biology?

Accepted Answer

The flipper of a whale and the human arm; they have similar bone structures but different functions.

Question 3

Which of the following is NOT a source of microevolution?

Accepted Answer

Homologous structures

Question 4

A population of beetles is separated by a river, and over time, the two groups evolve into distinct species. Which type of speciation does this scenario illustrate?

Accepted Answer

Allopatric speciation

Question 5

Which of the following correctly lists the order of taxonomic classification from most inclusive to least inclusive?

Accepted Answer

Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 6

Which of the following statements about prokaryotes and eukaryotes is correct?

Accepted Answer

Eukaryotes have a nucleus, while prokaryotes lack a nucleus.

Question 7

Which of the following is a correct scientific name, and why?

Accepted Answer

$$	extit{Homo sapiens}$$; the genus is capitalized and the species is lowercase, both italicized.

Question 8

Which of the following is NOT a difference between monocots and dicots?

Accepted Answer

Monocots have taproots; dicots have fibrous roots.

Question 9

Which of the following best describes the relationship between vascular and nonvascular plants?

Accepted Answer

Nonvascular plants rely on diffusion for transport, while vascular plants have xylem and phloem.

Question 10

Which of the following is a defining characteristic of animals in the phylum Arthropoda?

Accepted Answer

Segmented bodies with jointed appendages and an exoskeleton

Question 11

Which of the following best describes a coelom?

Accepted Answer

A body cavity completely lined by mesoderm

Question 12

Which of the following is true about mammalian teeth?

Accepted Answer

Mammals have incisors, canines, premolars, and molars, each adapted for different functions.

Question 13

Which of the following is a function of white blood cells in humans?

Accepted Answer

Defending the body against pathogens

Question 14

Which of the following best describes the difference between innate and adaptive immunity?

Accepted Answer

Innate immunity provides immediate, general defense; adaptive immunity develops specific responses over time.

Question 15

Which of the following sexually transmitted diseases (STDs) can be cured with antibiotics?

Accepted Answer

Chlamydia

Question 16

Which of the following best describes the path of an unfertilized egg in the female reproductive system?

Accepted Answer

Ovary → fallopian tube → uterus → vagina

Question 17

Which of the following is a characteristic of the tundra biome?

Accepted Answer

Low temperatures, permafrost, and low-growing vegetation

Question 18

Which oceanic zone is characterized by the presence of light and supports most photosynthetic organisms?

Accepted Answer

Photic zone

Question 19

A population of rabbits increases rapidly after a mild winter with abundant food, but decreases sharply after a drought. Which of the following best explains these population changes?

Accepted Answer

Population size is influenced by environmental factors such as food availability and climate.

Question 20

Which equation best represents the Hardy-Weinberg equilibrium for allele frequencies in a population?

Accepted Answer

$$p^2 + 2pq$$ + $$q^2 = 1$

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