Question 1

Which of the following best describes the difference between weather and climate?

Accepted Answer

Weather is the short-term atmospheric conditions in a specific area, while climate is the long-term average of these conditions over time.

Question 2

A scientist wants to test the effect of sunlight intensity on plant growth. Which of the following is the best example of a testable hypothesis for this experiment?

Accepted Answer

If the sunlight intensity increases, then the rate of plant growth will increase.

Question 3

Which equation correctly represents the exponential growth of a population?

Accepted Answer

$N_{t} = N_{0}e^{rt}$

Question 4

In a controlled experiment, which variable is manipulated by the researcher?

Accepted Answer

Independent variable

Question 5

Which of the following is an example of a density-dependent factor affecting population size?

Accepted Answer

A disease spreading more rapidly in crowded populations

Question 6

A population of rabbits has an intrinsic rate of increase $r = 0.2$ and a carrying capacity $K = 500$. Which equation describes the logistic growth of this population?

Accepted Answer

$\Delta N = rN \left( \frac{K-N}{K} \right)$

Question 7

Which of the following best explains the concept of ecological footprint?

Accepted Answer

The amount of land and resources required to support an individual's lifestyle

Question 8

Which of the following is NOT a step in the scientific method?

Accepted Answer

Ignoring data that does not fit the hypothesis

Question 9

Which of the following is a biotic factor that can affect species distribution?

Accepted Answer

Competition with other species

Question 10

In a food web, which organism is most likely to have the lowest production efficiency?

Accepted Answer

Tertiary consumer

Question 11

Which of the following best describes the process of biological magnification?

Accepted Answer

The accumulation of toxins in higher trophic levels of a food chain

Question 12

Which of the following is an example of an abiotic factor?

Accepted Answer

Salinity

Question 13

Which of the following is a correct statement about natural selection?

Accepted Answer

Natural selection acts on individuals, but its effects are seen in populations over time.

Question 14

Which of the following is NOT one of Darwin's four conditions for natural selection?

Accepted Answer

Traits are acquired during an organism's lifetime.

Question 15

Which equation represents the Hardy-Weinberg equilibrium for allele frequencies?

Accepted Answer

$p^2 + 2pq + q^2 = 1$

Question 16

Which evolutionary force is most likely responsible for a sudden change in allele frequency due to a natural disaster?

Accepted Answer

Genetic drift (bottleneck effect)

Question 17

Which of the following is an example of artificial selection?

Accepted Answer

Humans breeding dogs for specific traits

Question 18

Which of the following best describes a species' ecological niche?

Accepted Answer

The role a species plays in its environment, including its use of resources and interactions with other species

Question 19

Which of the following is a consequence of nutrient enrichment in aquatic ecosystems?

Accepted Answer

Eutrophication leading to algal blooms and oxygen depletion

Question 20

Which of the following is a threat to biodiversity caused by human activity?

Accepted Answer

Habitat loss due to deforestation

General Biology Study Guide: Ecology, Evolution, and Biodiversity

Study Guide - Practice Questions

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