Question 1

Which of the following best describes the difference between a hypothesis and a prediction in scientific inquiry?

Accepted Answer

A hypothesis is a testable explanation for an observation, while a prediction is a statement about what will happen if the hypothesis is correct.

Question 2

Which equation correctly represents exponential population growth?

Accepted Answer

$$dN\/dt = rN$$

Question 3

A scientist is studying the effect of temperature on the rate of photosynthesis in aquatic plants. Which is the independent variable in this experiment?

Accepted Answer

The temperature

Question 4

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

Accepted Answer

A disease spreading more rapidly as population density increases

Question 5

In a food web, which of the following best describes a keystone species?

Accepted Answer

A species whose impact on its community is disproportionately large relative to its abundance

Question 6

Which of the following best explains why logistic growth levels off as population size approaches carrying capacity?

Accepted Answer

Competition for resources increases, slowing population growth

Question 7

Which of the following is a primary consumer in a freshwater pond ecosystem?

Accepted Answer

Zooplankton

Question 8

Which of the following best describes the process of energy transfer in a food chain?

Accepted Answer

Energy decreases at each successive trophic level due to heat loss

Question 9

Which of the following equations represents the logistic growth model?

Accepted Answer

$$dN\/dt = rN \left(1 - \frac{N}{K}\right)$$

Question 10

A population of turtles in the Amazon is affected by both predation and habitat loss. Which of the following best describes these factors?

Accepted Answer

Predation is density-dependent, habitat loss is density-independent

Question 11

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

Accepted Answer

Ignoring contradictory evidence

Question 12

Which of the following best describes the role of decomposers in an ecosystem?

Accepted Answer

They recycle nutrients by breaking down dead organic matter

Question 13

Which of the following is an example of resource partitioning?

Accepted Answer

Two species of lizards using different parts of the same tree for habitat

Question 14

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

Accepted Answer

The gradual process of change and replacement of the types of species in a community over time

Question 15

Which of the following is a biotic factor that can influence population density?

Accepted Answer

Predation

Question 16

Which of the following best describes the difference between a food chain and a food web?

Accepted Answer

A food chain is a linear sequence of organisms, while a food web is a complex network of interconnected food chains

Question 17

Which of the following is the correct order of trophic levels in a typical ecosystem?

Accepted Answer

Primary producer → Primary consumer → Secondary consumer → Tertiary consumer

Question 18

Which of the following cycles is most directly affected by the burning of fossil fuels?

Accepted Answer

Carbon cycle

Question 19

Which of the following is a correct statement about survivorship curves?

Accepted Answer

Type II curves show constant mortality rate throughout life

Question 20

A scientist collects data on the number of fish in a lake over several years. Which statistical test would be most appropriate to compare the mean number of fish between two years?

Accepted Answer

t-test

General Biology Exam Study Guide: Ecology, Scientific Inquiry, and Data Analysis

Study Guide - Practice Questions

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