Studying Populations Flashcards
38 Questions
100 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is direct observation?

  • Counting the number of nesting sites in an area
  • Counting hawks with and without bands on their legs
  • Counting all the crabs that live in a tide pool (correct)
  • Counting the number of red maples in a small area
  • What is indirect observation?

  • Counting hawks with and without bands on their legs
  • Counting the number of red maples in a small area
  • Counting the number of nesting sites in an area (correct)
  • Counting all the crabs that live in a tide pool
  • What is sampling?

  • Counting all the crabs that live in a tide pool
  • Counting hawks with and without bands on their legs
  • Counting the number of red maples in a small area to estimate the number in the entire forest (correct)
  • Counting the number of nesting sites in an area
  • What is a mark and recapture study?

    <p>Counting hawks with and without bands on their legs</p> Signup and view all the answers

    How can populations change size?

    <p>When new members join the population or when members leave the population.</p> Signup and view all the answers

    What is the major way in which new individuals are added to a population?

    <p>By being born into it.</p> Signup and view all the answers

    What is birthrate?

    <p>The number of births in a population in a certain amount of time.</p> Signup and view all the answers

    What is the major way that individuals leave a population?

    <p>Death.</p> Signup and view all the answers

    What is death rate?

    <p>The number of deaths in a population in a certain amount of time.</p> Signup and view all the answers

    If the birth rate is greater than the death rate, population size decreases.

    <p>False</p> Signup and view all the answers

    What is immigration?

    <p>Moving into a population.</p> Signup and view all the answers

    What is emigration?

    <p>Leaving a population.</p> Signup and view all the answers

    Population density is the number of individuals in a specific area.

    <p>True</p> Signup and view all the answers

    What is a limiting factor?

    <p>An environmental factor that causes a population to decrease.</p> Signup and view all the answers

    What are some limiting factors for populations?

    <p>Food, water, space, and weather conditions.</p> Signup and view all the answers

    What is carrying capacity?

    <p>The largest population that an area can support.</p> Signup and view all the answers

    Space is often a limiting factor for plants.

    <p>False</p> Signup and view all the answers

    What are some ways weather conditions can limit population growth?

    <p>Temperature and rainfall can limit population growth. Harsh weather conditions can prevent food production and less people can be supported.</p> Signup and view all the answers

    What is succession?

    <p>Series of predictable changes that occur in a community over time.</p> Signup and view all the answers

    What is primary succession?

    <p>Series of changes that occur in an area where no soil or organisms exist.</p> Signup and view all the answers

    What is secondary succession?

    <p>Series of changes that occur in an area where the ecosystem has been disturbed, but where soil and organisms exist.</p> Signup and view all the answers

    What are pioneer species?

    <p>The first species to populate the area in primary succession.</p> Signup and view all the answers

    What are common primary species?

    <p>Mosses and lichens.</p> Signup and view all the answers

    How do pioneer species help develop soil?

    <p>Pioneer species help develop soil because when organisms die, they provide nutrients that enrich the thin layer of soil that is forming on rocks.</p> Signup and view all the answers

    What natural disturbances can result in secondary succession?

    <p>Natural disturbances that have an effect include fires, hurricanes, and tornados.</p> Signup and view all the answers

    What human activities can result in secondary succession?

    <p>Farming, logging, or mining.</p> Signup and view all the answers

    Secondary succession occurs more slowly than primary succession.

    <p>False</p> Signup and view all the answers

    Matter is made up of tiny particles called?

    <p>Atoms.</p> Signup and view all the answers

    What are two or more atoms that are joined and act as a unit?

    <p>Molecule.</p> Signup and view all the answers

    What are the three important cycles of matter in an ecosystem?

    <p>Carbon, oxygen, and nitrogen.</p> Signup and view all the answers

    Water is essential for life.

    <p>True</p> Signup and view all the answers

    What is the continuous process by which water moves from Earth's surface to the atmosphere and back?

    <p>Water cycle.</p> Signup and view all the answers

    What is evaporation?

    <p>Process by which liquid water changes to water vapor.</p> Signup and view all the answers

    What is condensation?

    <p>Process by which water vapor changes to liquid water.</p> Signup and view all the answers

    What is precipitation?

    <p>Forms of water that fall from clouds and reach Earth's surface.</p> Signup and view all the answers

    The energy for evaporation comes from the sun.

    <p>True</p> Signup and view all the answers

    What process results in the formation of clouds?

    <p>Condensation.</p> Signup and view all the answers

    What are the four forms of precipitation?

    <p>Rain, sleet, snow, hail.</p> Signup and view all the answers

    Study Notes

    Population Studies Terminology

    • Direct observation involves counting individual organisms, such as crabs in a tide pool.
    • Indirect observation relies on counting signs of organisms, like nesting sites.
    • Sampling estimates population size by counting organisms in a smaller area, such as red maples in a section of a forest.
    • Mark and recapture study tracks population sizes by observing marked individuals, such as hawks with bands.

    Population Dynamics

    • Population size changes occur through the addition of new members or the departure of existing ones.
    • The main way individuals are added to a population is through births.
    • Birthrate is defined as the number of births in a population over a specific period.
    • The primary means of individuals leaving a population is through death, characterized by the death rate, or the number of deaths in a population over time.

    Movement of Individuals

    • Immigration refers to the process of individuals moving into a population.
    • Emigration is the act of leaving a population.

    Population Density and Factors

    • Population density measures the number of individuals within a specific area.
    • A limiting factor is an environmental condition that leads to a population decline, with examples including food, water, space, and weather.
    • Carrying capacity represents the maximum population size that an environment can sustain.

    Effects of Weather and Space on Populations

    • Weather conditions like temperature and rainfall can restrict population growth, preventing adequate food production.
    • Space is generally a limiting factor for animal populations, rather than for plants.

    Ecological Succession

    • Succession describes a series of predictable environmental changes in a community over time.
    • Primary succession occurs in environments with no existing soil or organisms.
    • Secondary succession happens following disturbances in areas where soil and organisms still exist.
    • Pioneer species are the first organisms to inhabit a previously barren area during primary succession, often including mosses and lichens.

    Soil Development and Natural Disturbances

    • Pioneer species contribute to soil development by adding nutrients as they die and decompose.
    • Natural disturbances that can lead to secondary succession include fires, hurricanes, and tornadoes, while human activities like farming, logging, and mining can also trigger this process.

    Matter and Ecosystem Cycles

    • Matter consists of tiny particles called atoms. When two or more atoms bond, they form a molecule.
    • Important cycles of matter in ecosystems include the carbon, oxygen, and nitrogen cycles.
    • Water is crucial for life, participating in the water cycle, which involves the continuous movement of water between Earth's surface and the atmosphere.

    Water Cycle Processes

    • Evaporation is when liquid water transforms into water vapor.
    • Condensation occurs when water vapor changes back into liquid form, leading to cloud formation.
    • Precipitation refers to various forms of water, such as rain, sleet, snow, and hail, that descend from clouds due to condensation.

    Energy and Water Cycle

    • The energy necessary for evaporation originates from the sun, driving these water cycle processes.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge of key concepts related to studying animal populations with these flashcards. Each card provides a term and its definition, helping you understand methods like direct observation, indirect observation, sampling, and mark and recapture. Perfect for biology students looking to reinforce their understanding!

    More Like This

    Population Ecology
    7 questions

    Population Ecology

    CourteousDiscernment avatar
    CourteousDiscernment
    Population Ecology Quiz
    9 questions
    Species Interaction and Population Ecology Quiz
    10 questions
    Use Quizgecko on...
    Browser
    Browser