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Gamme - Module 4-CW

Module 4 focuses on Population Ecology, covering key concepts such as density-dependent and density-independent factors, K-strategists and r-strategists, and the dynamics of population growth. It includes multiple-choice questions and short answer prompts that explore definitions, effects of birth and death rates, carrying capacity, and the impact of immigration and disease on populations. The module emphasizes the importance of understanding ecological interactions and human influences on population dynamics.

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56 views3 pages

Gamme - Module 4-CW

Module 4 focuses on Population Ecology, covering key concepts such as density-dependent and density-independent factors, K-strategists and r-strategists, and the dynamics of population growth. It includes multiple-choice questions and short answer prompts that explore definitions, effects of birth and death rates, carrying capacity, and the impact of immigration and disease on populations. The module emphasizes the importance of understanding ecological interactions and human influences on population dynamics.

Uploaded by

headstartacademics2021
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Module 4: Population Ecology

I. MCQs (8 points)
1. Which limiting factor is density independent?
A. disease
B. drought
C. competition
D. food supply

2. Populations of K-strategists usually_____________.


A. are controlled by density-dependent factors
B. are controlled by density-independent factors
C. do not reach equilibrium at the carrying capacity
D. produce as many offspring as possible in a short period of time

3. What are forest fires, temperature fluctuations, and floods all examples of?
A. biotic, density-dependent factors
B. biotic, density-independent factors
C. abiotic, density-dependent factors
D. abiotic, density-independent factors

4. Mice are an example of an r-strategist reproduction pattern because_____________.


A. they produce few individuals
B. the expend great energy raising young
C. they produce many offspring
D. they maintain populations near the carrying Capacity

5. The pattern in which a population is spaced within an area is called ____.


A. growth patterning
B. population density
C. dispersion
D. specific variation

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6. The term used to describe the number of individuals moving into a population is ____.
A. growth patterning
B. emigration
C. immigration
D. logistic growth

7. Why is disease considered a density-dependent environmental factor?


A. Disease spreads easily in a low-density population.
B. Population density affects the amount of contact.
C. Disease won't spread in high density populations.
D. Disease may be influenced by weather.

8. What term describes individuals moving away from a population?


A. immigration
B. emigration
C. exponential growth
D. logistic movement

II. Short Answers: (17 points)


1. What defines a population in an ecosystem? 1 point

2. Why is a herd of elephants are considered a population, but a forest is not? 1 point

3. How do birth rate and death rate affect population size? 1 point

4. What is carrying capacity? 1 point

5. Can carrying capacity change over time? How? 2 points

6. If the birth rate exceeds the death rate, what happens to the population? 1 point

7. How does immigration affect population growth? 1 point

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8. Why do populations rarely grow exponentially for long periods? 1 point

9. How would an increase in predators impact the prey population? 1 point

10. What happens when a population exceeds its carrying capacity? 1 point

11. Why can’t a forest have unlimited deer or tigers? 1 point

12. How does disease influence population dynamics? 1 point

13. What factors could cause a sudden decline in a population? 1 point

14. How do human activities alter natural population dynamics? 1 point

15. Can competition between species change the size of a population? Give an example. 2 points

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