Question 1

Which of the following best describes the difference between abiotic and biotic factors in an ecosystem?

Accepted Answer

Abiotic factors are non-living components like temperature and water, while biotic factors are living organisms such as plants and animals.

Question 2

A population of frogs is found only near a specific pond. Which of the following is most likely an abiotic factor restricting their distribution?

Accepted Answer

The temperature of the water in the pond.

Question 3

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

Accepted Answer

Organism, population, community, ecosystem, biosphere

Question 4

Which biome is characterized by the following: high species diversity, warm temperatures year-round, and high annual rainfall?

Accepted Answer

Tropical forest

Question 5

A scientist observes that a certain plant species cannot survive outside a narrow range of soil pH. This is an example of which concept?

Accepted Answer

Abiotic factor limiting species distribution

Question 6

Which of the following best describes the chaparral biome?

Accepted Answer

Mild, wet winters and hot, dry summers with frequent fires and drought-resistant shrubs.

Question 7

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

Accepted Answer

A disease outbreak reduces the population of rabbits in a grassland.

Question 8

Which biome is most likely to experience the greatest temperature extremes between summer and winter?

Accepted Answer

Temperate grassland

Question 9

A student is asked to define ecology. Which of the following is the most accurate definition?

Accepted Answer

The scientific study of interactions between organisms and their environment.

Question 10

Which of the following best explains why deserts have low species diversity?

Accepted Answer

Extreme temperature fluctuations and low precipitation limit the survival of many species.

Question 11

A coniferous forest is most likely to be found in which of the following regions?

Accepted Answer

Northern latitudes with long, cold winters and short, wet summers.

Question 12

Which of the following scenarios best illustrates the interaction between biotic and abiotic factors?

Accepted Answer

A population of fish decreases due to lower oxygen levels in warmer water.

Question 13

Which biome is characterized by permafrost, low precipitation, and low species diversity?

Accepted Answer

Tundra

Question 14

Which of the following is NOT a major factor influencing the distribution of life in the biosphere?

Accepted Answer

The gravitational pull of the moon

Question 15

A grassland ecosystem is converted into farmland. Which level of ecological organization is most directly affected?

Accepted Answer

Community

Question 16

Which of the following best describes the polar ice biome?

Accepted Answer

Extremely cold temperatures year-round, very low precipitation, and minimal vegetation.

Question 17

Which of the following is an example of a multi-step interaction involving both biotic and abiotic factors?

Accepted Answer

A drought (abiotic) reduces plant growth, leading to a decline in herbivore populations (biotic), which then affects predator numbers (biotic).

Question 18

Which biome is most likely to have plants with adaptations such as thick cuticles and deep roots?

Accepted Answer

Desert

Question 19

Which of the following best explains why savannas support large populations of grazing animals?

Accepted Answer

Seasonal rainfall supports grasses but not dense forests, providing abundant food for grazers.

Question 20

A researcher is studying the effect of sunlight on algae growth in a lake. Which level of ecological organization is being investigated?

Accepted Answer

Population

Chapter 34: The Biosphere – Study Guide and Key Concepts

Study Guide - Practice Questions