Q: Which equation best represents the relationship between solar radiation and latitude, explaining why the tropics are warmer than the poles?

$$ I = I_0$ \cdot \cos(\theta) $$

Question 1

Which of the following best describes the concept of bioaccumulation as illustrated by the effects of DDT in aquatic food webs?

Accepted Answer

DDT concentration increases at higher trophic levels because it is not metabolized and accumulates in tissues.

Question 2

Which equation best represents the relationship between solar radiation and latitude, explaining why the tropics are warmer than the poles?

Accepted Answer

$$ I = I_0$ \cdot \cos(	heta) $$

Question 3

Which of the following is a proximate cause for why male starlings sing in the spring?

Accepted Answer

Day length triggers hormonal changes that activate singing behavior.

Question 4

Which biome is characterized by low temperatures, low moisture, and the presence of permafrost?

Accepted Answer

Arctic tundra

Question 5

What is the primary abiotic factor that distinguishes wetlands from lakes and ponds?

Accepted Answer

Wetlands have emergent vegetation and only shallow water.

Question 6

Which of the following is an example of ultimate causation in behavioral ecology?

Accepted Answer

Male starlings sing to attract mates, increasing their reproductive success.

Question 7

Which physical factor is most likely to limit the distribution of organisms in aquatic biomes due to its effect on osmosis?

Accepted Answer

Salinity

Question 8

A population of fruit fly larvae exhibits two foraging behaviors: 'rovers' and 'sitters.' Which scenario best explains why the rover allele is favored at high population density?

Accepted Answer

Rovers are more likely to find unused food patches when competition is high.

Question 9

Which of the following best describes the effect of Hadley cells on global climate?

Accepted Answer

Hadley cells cause moist conditions at the equator and dry conditions at 30° latitude.

Question 10

Which of the following is a key feature of temperate grasslands?

Accepted Answer

Moderate temperatures, low to moderate moisture, and frequent fire regimes

Question 11

Which equation best describes the relationship between water temperature and density, explaining why 4°C water sinks to the bottom of lakes during turnover?

Accepted Answer

$$ \rho = \$$rho_0$$ \left(1 - \alpha (T - 4) \right) $$

Question 12

Which navigation strategy involves using familiar landmarks to find a location?

Accepted Answer

Piloting

Question 13

Which of the following is a plausible reason why carnivorous plants are most common in bogs?

Accepted Answer

Bogs have low oxygen and acidic soils, limiting nutrient availability.

Question 14

Which of the following best explains why coastal areas generally have more moderate climates than inland areas?

Accepted Answer

Water has a high specific heat capacity, buffering temperature changes.

Question 15

Which of the following is NOT a factor that affects the distribution and abundance of organisms in aquatic biomes?

Accepted Answer

Altitude

Question 16

Which biome is defined by mild winter temperatures, high moisture, and a canopy of conifers?

Accepted Answer

Temperate coniferous forest

Question 17

Which of the following is a real-world example of a biotic factor influencing species distribution?

Accepted Answer

Presence of competitors, mutualists, predators, or parasites.

Question 18

Which of the following best describes the concept of a niche model?

Accepted Answer

A niche model shows the range of conditions occupied by a species.

Question 19

Which of the following is a plausible reason why rigorous testing of the hypothesis that migration increases survival and reproductive success is difficult?

Accepted Answer

Migration involves multiple interacting factors that are hard to isolate experimentally.

Introduction to Ecology and Behavioural Ecology: Key Concepts and Biomes

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