Question 1

Which biogeographic process is most directly illustrated by the closure of the Central American Seaway during the Miocene, as shown in the provided maps and research article?

Accepted Answer

Vicariance

Question 2

The formation of the Isthmus of Panama led to the Great American Biotic Interchange (GABI). Which of the following best describes the effect of this event on mammalian diversity in South America?

Accepted Answer

It led to an increase in mammalian diversity due to the influx of North American species.

Question 3

Based on the map of endemic areas of the Cactaceae, which biogeographic concept is best illustrated?

Accepted Answer

Endemism

Question 4

Why are cacti restricted to the New World, while similar succulents are found in the Old World?

Accepted Answer

Cacti evolved after the continents separated, preventing their dispersal to the Old World.

Question 5

The boxplot showing latitude of land mammal collections over time in North and South America is most useful for analyzing which biogeographic pattern?

Accepted Answer

Species richness as a function of latitude

Question 6

Which hypothesis explains why tropical regions have higher species richness than temperate regions?

Accepted Answer

Species energy hypothesis

Question 7

The distribution of marsupials, as shown in the global map, is best explained by which combination of biogeographic processes?

Accepted Answer

Vicariance and dispersal

Question 8

Which equation would you use to quantify diversification rates in a phylogenetic tree, assuming a constant rate of diversification?

Accepted Answer

$$N(t) = N_0$ e$$^{rt}$$

Question 9

A lineage-through-time plot that shows non-linear growth in the number of lineages over time most likely indicates:

Accepted Answer

Bursts of speciation related to major evolutionary events

Question 10

Resource partitioning among chipmunk species along an elevational gradient is an example of:

Accepted Answer

Niche differentiation

Question 11

The Wallace Line, as shown in the map of Southeast Asia, represents:

Accepted Answer

A biogeographic boundary separating distinct faunal regions

Question 12

Which factor is NOT a primary explanation for higher species richness in the tropics?

Accepted Answer

Vicariance due to geological barriers

Question 13

Which real-world event is an example of vicariance?

Accepted Answer

The closure of the Central American Seaway

Question 14

Which of the following is a plausible consequence of the Great American Biotic Interchange (GABI) for South American mammals?

Accepted Answer

Increased competition and extinction of some native species

Question 15

Which equation best describes the relationship between species richness ($$S) $$and latitude ($$L) $$according to the species energy hypothesis?

Accepted Answer

$$S = a - bL$$

Question 16

Which of the following is NOT a plausible explanation for the sudden shift in avian fauna between Asia/Oceania and Australia?

Accepted Answer

Continuous range expansion across the region

Question 17

Which term describes the division of a species' range into multiple units, as seen in the distribution of marsupials?

Accepted Answer

Disjunction

Question 18

Phylogenetic tree thinking is critical to biogeography because it allows scientists to:

Accepted Answer

Quantify diversification rates and infer historical biogeographic events

Question 19

Which of the following best explains why most fish live in shallow waters despite most ocean volume being in the deep sea?

Accepted Answer

Shallow water lineages have had more time to diversify and faster rates of speciation

Question 20

Which of the following is a real-world example of endemism?

Accepted Answer

Cacti being restricted to the New World

Lec 21

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