Q: A population of mice has a per capita growth rate $$r = 0.05. If $$the initial population size is $$N_0 = 200$, what will the population size be after 10 years assuming continuous exponential growth?

$$N(10) = 200 \times e$$^{0.5}$$ \approx 329$$

Question 1

Which of the following best explains why the Northern Hemisphere experiences summer in June?

Accepted Answer

The Northern Hemisphere is tilted toward the Sun, resulting in more direct sunlight and longer days.

Question 2

A mountain range causes a rain shadow effect. Which biome is most likely to be found on the leeward side of the mountain?

Accepted Answer

Desert

Question 3

Which equation describes exponential population growth under continuous conditions?

Accepted Answer

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

Question 4

A population of rabbits has a net reproductive rate $$R_0 = 0.8$. What does this indicate about the population?

Accepted Answer

The population is decreasing.

Question 5

Which of the following is a characteristic adaptation of plants in the tundra biome?

Accepted Answer

Short stature and rapid life cycles to survive cold and short growing seasons

Question 6

Which equation represents Hamilton’s Rule for the evolution of altruistic behavior?

Accepted Answer

$$rB \u003e C$$

Question 7

Which scenario best illustrates a density-dependent factor limiting population growth?

Accepted Answer

A disease spreads more rapidly as population density increases.

Question 8

Which of the following is an example of an ultimate explanation for bird migration?

Accepted Answer

Birds migrate to increase their survival and reproductive success by accessing abundant resources.

Question 9

A population of mice has a per capita growth rate $$r = 0.05. If $$the initial population size is $$N_0 = 200$, what will the population size be after 10 years assuming continuous exponential growth?

Accepted Answer

$$N(10) = 200 	imes e$$^{0.5}$$ \approx 329$$

Question 10

Which of the following best describes a Type III survivorship curve?

Accepted Answer

Low survivorship early in life, with few individuals surviving to old age.

Question 11

Which of the following is a trade-off commonly observed in life history strategies?

Accepted Answer

Producing many small offspring versus few large offspring.

Question 12

Which biome is most likely to be found at high latitude with low precipitation and cold temperatures?

Accepted Answer

Tundra

Question 13

Which of the following is an example of resource partitioning?

Accepted Answer

Two bird species evolve different beak shapes to eat different types of seeds.

Question 14

Which equation models logistic population growth?

Accepted Answer

$$\frac{dN}{dt} = rN \left(1 - \frac{N}{K}\right)$$

Question 15

Which of the following best describes a keystone species?

Accepted Answer

A species whose removal causes a dramatic change in community structure.

Question 16

Which of the following is true about the Coriolis effect?

Accepted Answer

It results from Earth's rotation, causing winds and currents to curve.

Question 17

Which of the following is a constitutive defense?

Accepted Answer

A plant always has thorns regardless of herbivore presence.

Question 18

Which of the following best explains why tropical regions have higher species richness than temperate regions?

Accepted Answer

Tropical regions have stable climates and high productivity, allowing more niches.

Question 19

Which of the following is an example of an inducible defense?

Accepted Answer

A plant produces chemicals only after being attacked by insects.

Question 20

Which of the following is true about r-selected species?

Accepted Answer

They reproduce rapidly with many offspring and little parental care.

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