Question 1

Which of the following best describes the main focus of ecology as a scientific discipline?

Accepted Answer

The scientific study of interactions between organisms and their environment.

Question 2

Which of the following is NOT considered a direct method for studying ecological processes?

Accepted Answer

Environmental activism

Question 3

A researcher observes that the number of fish in a marine reserve increases after fishing is banned. Which statement best explains why this observation alone does NOT prove that banning fishing caused the increase?

Accepted Answer

Correlation does not imply causation.

Question 4

Which of the following is a key requirement for a well-designed ecological experiment?

Accepted Answer

Manipulation, replication, and randomization

Question 5

In a mesocosm experiment, why is it important to include both control and treatment groups?

Accepted Answer

To compare the effects of the experimental variable against a baseline.

Question 6

Which of the following statements is an example of a major ecological concept?

Accepted Answer

Matter always goes somewhere; material doesn’t disappear.

Question 7

A scientist uses a computer model to predict how a forest ecosystem will respond to increased rainfall. What is a limitation of this approach?

Accepted Answer

Models require assumptions that may not always be accurate.

Question 8

Which of the following best illustrates the concept that 'no population can increase in size forever'?

Accepted Answer

A population of rabbits grows rapidly until food becomes scarce, then stabilizes.

Question 9

Why is replication important in ecological experiments?

Accepted Answer

It increases the reliability of results by reducing the impact of random variation.

Question 10

Which of the following is a practical reason for studying ecology?

Accepted Answer

To develop sustainable use of environmental services needed by humans.

Question 11

A marine reserve is established, leading to an increase in large piscivorous fish. What is a likely consequence for juvenile fish populations, based on ecological principles?

Accepted Answer

Juvenile fish survival may decrease due to higher predation pressure.

Question 12

Which of the following best explains why 'space matters' in ecology?

Accepted Answer

Environmental conditions can vary from one location to another, affecting organisms.

Question 13

Which of the following is an example of selective mortality in an ecological context?

Accepted Answer

Only fish with certain traits survive increased predation in a marine reserve.

Question 14

Which of the following is NOT a difference between ecology and environmental science?

Accepted Answer

Ecology is a social ideology seeking to prevent environmental degradation.

Question 15

Which of the following best describes the relationship between pattern and process in ecological studies?

Accepted Answer

Pattern refers to observations of natural phenomena, while process explains the mechanisms behind those patterns.

Question 16

A scientist wants to test the effect of a new pollutant on wetland plant growth. Which experimental design would provide the most reliable results?

Accepted Answer

Randomly assign multiple wetland plots to control and treatment groups, apply the pollutant only to treatment plots, and replicate the experiment.

Question 17

Which of the following statements about species interactions is supported by ecological principles?

Accepted Answer

Life would be impossible without species interactions because species depend on each other.

Question 18

Which of the following is an example of how evolution matters in ecology?

Accepted Answer

A population of insects develops resistance to a pesticide over several generations.

Question 19

Which of the following best illustrates the concept that 'an organism’s resources are finite'?

Accepted Answer

A plant grows more slowly when nutrients in the soil are depleted.

Question 20

Why is it important for ecologists to report their results after conducting research?

Accepted Answer

To share findings with the scientific community and allow others to build on their work.

1.1 Introduction to Ecology: Concepts, Scales, and Methods

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