Question 1

Which of the following best describes the biosphere?

Accepted Answer

The sum of all ecosystems, all life, and where it lives on Earth.

Question 2

Which equation best represents the energy balance for aquatic organisms that must regulate water and solute concentrations?

Accepted Answer

$$\Delta W = W_{in} - W_{out}$$

Question 3

A rabbit living in a temperate zone must respond to seasonal changes in temperature. Which process allows it to adjust its physiology to these changes?

Accepted Answer

Acclimation

Question 4

Which of the following is NOT a factor that determines terrestrial biomes?

Accepted Answer

Salinity of soil

Question 5

Phytoplankton populations in aquatic biomes are primarily regulated by which two factors?

Accepted Answer

Light and nutrients

Question 6

Which biome is characterized by high species diversity and supports the growth of rich terrestrial ecosystems?

Accepted Answer

Tropical rainforest

Question 7

What is the main difference between endotherms and ectotherms in their response to variable environments?

Accepted Answer

Endotherms regulate body temperature internally, while ectotherms rely on external sources.

Question 8

Which of the following best describes an estuary?

Accepted Answer

A transition area between river and sea, with salinity varying with tides.

Question 9

Which equation would you use to calculate the net photosynthetic rate of phytoplankton in a lake?

Accepted Answer

$$P_{net} = P_{gross} - R$$

Question 10

Which of the following is a correct hierarchy of ecological organization from smallest to largest?

Accepted Answer

Population, community, ecosystem, landscape, biosphere

Question 11

A mountain range affects local climate by causing temperature variation and ______ effects.

Accepted Answer

Rain shadow

Question 12

Which of the following statements about freshwater biomes is TRUE?

Accepted Answer

They make up less than 1% of Earth's water but support a large number of species.

Question 13

Which process is most responsible for the formation of rain forests near the equator?

Accepted Answer

Warm, moist air rises, cools, and forms clouds and rain.

Question 14

Which of the following is a major abiotic factor that can vary seasonally and daily, affecting metabolism in organisms?

Accepted Answer

Temperature

Question 15

Which of the following best describes the intertidal zone?

Accepted Answer

An area submerged at high tides and exposed at low tides.

Question 16

Which of the following is a correct description of environmentalism as compared to ecology?

Accepted Answer

Environmentalism includes social dimensions, values, and actions, while ecology studies interactions between organisms and their environment.

Question 17

Which of the following is a major difference between aquatic and terrestrial biomes?

Accepted Answer

Aquatic biomes are determined by salinity and other physical factors, while terrestrial biomes are characterized by vegetation type and climate.

Question 18

Which of the following best explains why coral reefs are found in the photic zone of warm tropical waters?

Accepted Answer

Coral reefs require sunlight for photosynthetic symbionts and thrive in warm, nutrient-rich waters.

Question 19

Which of the following is a plausible consequence of climate patterns resulting from Earth's movement in space?

Accepted Answer

Seasonal variation in temperature and day length.

Ecology: Introduction to the Biosphere and Biomes

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