Animal Behavior and Ecology Quiz

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Questions and Answers

What are the two main types of causation regarding animal behavior?

  • Behavioral and Environmental
  • Inherent and Learned
  • Proximate and Ultimate (correct)
  • Instinctual and Adaptive

Which of the following best describes a Fixed Action Pattern?

  • A learned response to a complex stimulus
  • An instinctual behavior only seen in mammals
  • A habitual response that evolves over time
  • A sequence of unlearned acts triggered by a simple stimulus (correct)

Which statement accurately describes the concept of migration in animals?

  • It is solely based on learned behavior from the parents.
  • It involves regular, long-distance movement often influenced by environmental stimuli. (correct)
  • It is a random movement pattern in response to internal stimuli.
  • It typically occurs only during extreme weather conditions.

What role do pheromones play in animal communication?

<p>They are chemical substances that convey information through specific odors or tastes. (A)</p> Signup and view all the answers

What is a characteristic of circannual rhythms in animals?

<p>They are behavioral rhythms linked to the seasonal cycle. (B)</p> Signup and view all the answers

What happens to the immigration rate as species diversity increases?

<p>It decreases. (C)</p> Signup and view all the answers

What is the primary factor that can lead to an increase in extinction rates?

<p>Decreased food availability. (B)</p> Signup and view all the answers

Which of the following correctly describes zoonotic pathogens?

<p>Pathogens transferred from animals to humans. (B)</p> Signup and view all the answers

What impact does the size and distance from the mainland have on species immigration and extinction according to the Island Equilibrium Model?

<p>Smaller, distant islands may have fewer species due to lower immigration rates. (A)</p> Signup and view all the answers

How do pathogens alter community structure?

<p>By causing direct harm to multiple species. (B)</p> Signup and view all the answers

What term describes the growth of a plant towards a stimulus such as sunlight?

<p>Phototropism (C)</p> Signup and view all the answers

Which type of behavior is specifically characterized by movement towards or away from a stimulus in animals?

<p>Taxis (C)</p> Signup and view all the answers

What aspect of animal behavior focuses on the ecological and evolutionary factors influencing actions?

<p>Behavioral Ecology (C)</p> Signup and view all the answers

Which type of behavior is described as genetically controlled and does not require prior experience?

<p>Instinctive Behavior (B)</p> Signup and view all the answers

Which of the following is not considered a method of communication among animals?

<p>Aposematic (C)</p> Signup and view all the answers

What is the primary function of communication behaviors among animals?

<p>To enhance survival and reproductive success (A)</p> Signup and view all the answers

Which of the following is a benefit of animals cooperating in groups?

<p>Ability to intimidate predators (B)</p> Signup and view all the answers

What is the role of discrete sensory inputs in animal behavior?

<p>They can stimulate both simple and complex behaviors (D)</p> Signup and view all the answers

What is the primary function of imprinting in young animals?

<p>To establish a long-lasting behavioral response to an object or individual (B)</p> Signup and view all the answers

Which form of learning involves modifying behavior based on personal experience?

<p>Cognition (C)</p> Signup and view all the answers

What is the optimal foraging model based on?

<p>Maximizing benefits while minimizing costs (B)</p> Signup and view all the answers

Which mating system is characterized by an individual of one sex mating with several members of the opposite sex?

<p>Polygamous (B)</p> Signup and view all the answers

In which situation is altruism most likely to occur?

<p>When genes are passed through aiding relatives (A)</p> Signup and view all the answers

What is Hamilton's Rule primarily used to analyze?

<p>The evolution of altruism based on genetic contributions (B)</p> Signup and view all the answers

Which learning type involves observing and mimicking the behavior of others?

<p>Social Learning (D)</p> Signup and view all the answers

What type of sexual selection occurs when individuals compete for mating opportunities?

<p>Intrasexual selection (C)</p> Signup and view all the answers

How does play behavior primarily benefit animals?

<p>It prepares them for unexpected events (C)</p> Signup and view all the answers

What is the relationship between sexual dimorphism and mating systems?

<p>Polygamous species typically exhibit high sexual dimorphism (D)</p> Signup and view all the answers

What defines a cognitive map in the context of spatial learning?

<p>A representation of spatial relationships between objects (C)</p> Signup and view all the answers

When is the certainty of paternity typically highest?

<p>In species with external fertilization of eggs (D)</p> Signup and view all the answers

What role does genetic predisposition play in behavior?

<p>It contributes to consistent behavioral patterns across generations (D)</p> Signup and view all the answers

Which type of learning occurs when an organism learns to associate two environmental features?

<p>Associative Learning (D)</p> Signup and view all the answers

What type of behavior is C.elegans displaying when it directs its movement towards a food source it can detect?

<p>Taxis (B)</p> Signup and view all the answers

How does energy transfer within a food chain typically occur according to the energetic hypothesis?

<p>10% energy transfer to higher trophic levels (B)</p> Signup and view all the answers

What term describes the organisms that produce their own organic compounds through photosynthesis or chemosynthesis?

<p>Autotrophs (A)</p> Signup and view all the answers

Which ecological interaction refers to when one species benefits at the expense of another?

<p>Parasitism (A)</p> Signup and view all the answers

What is the ecological niche of an organism?

<p>The specific set of biotic and abiotic resources it uses (A)</p> Signup and view all the answers

What is the primary benefit of higher species diversity in a community?

<p>Greater biomass production (A)</p> Signup and view all the answers

Which term describes the hypothetical condition that two species cannot coexist if they occupy identical ecological niches?

<p>Competitive exclusion (D)</p> Signup and view all the answers

What process describes the gradual replacement of species in a given area over time following a disturbance?

<p>Secondary succession (D)</p> Signup and view all the answers

What is the term for the area of overlap between two biomes?

<p>Ecotone (B)</p> Signup and view all the answers

What type of organisms are characterized by their inability to regulate body temperature and often exhibit behaviors to adapt to temperature changes?

<p>Ectothermic (C)</p> Signup and view all the answers

What model suggests that higher trophic levels influence lower ones in an ecosystem?

<p>Top-down model (B)</p> Signup and view all the answers

What phenomenon refers to the fine, localized patterns of climate conditions?

<p>Microclimate (B)</p> Signup and view all the answers

What term describes the process whereby a species moves away from its original habitat to a new location?

<p>Dispersal (A)</p> Signup and view all the answers

What is the main characteristic of R-selected species?

<p>Many offspring in fluctuating environments (A)</p> Signup and view all the answers

What does the equation dN/dt = B - D represent?

<p>The relationship between birth rate and death rate in a population (B)</p> Signup and view all the answers

Which growth model shows a slow increase followed by a rapid growth phase but eventually levels off?

<p>Logistic growth (D)</p> Signup and view all the answers

What does K represent in the logistic growth model dN/dt = rmaxN(K-N)/K?

<p>The carrying capacity of the environment (C)</p> Signup and view all the answers

What type of survivorship curve describes species that have high mortality rates for the young?

<p>Type III (A)</p> Signup and view all the answers

Which of the following best defines ecological footprint?

<p>The amount of land and water area required for resource consumption and waste absorption (B)</p> Signup and view all the answers

What is the primary cause of demographic transition in human populations?

<p>The shift from high birth and death rates to low birth and death rates with improved living conditions (C)</p> Signup and view all the answers

Which of the following statements about r-selection is accurate?

<p>It promotes traits advantageous in environments with abundant resources and low density. (C)</p> Signup and view all the answers

Which term describes the phenomenon where a loss of genetic diversity increases extinction risk in small populations?

<p>Extinction vortex (B)</p> Signup and view all the answers

What is the significance of a sympathetic relationship in ecology?

<p>It indicates a mutual benefit between two different species. (B)</p> Signup and view all the answers

Which ecological principle explains how energy is lost at each trophic level?

<p>Trophic efficiency (C)</p> Signup and view all the answers

What does the term 'biogeochemical cycles' refer to?

<p>The physical and biological processes that recycle nutrients in ecosystems. (D)</p> Signup and view all the answers

Which of the following concepts involves connecting fragmented ecosystems for better species interaction?

<p>Movement corridor (A)</p> Signup and view all the answers

What is the main objective of conservation biology?

<p>To integrate multiple scientific disciplines for the preservation of biological diversity. (B)</p> Signup and view all the answers

Flashcards

Stimulus

An external signal that causes a response in an organism. For example, the smell of food could trigger a foraging response.

Tropism

Growth towards (positive) or away from (negative) a stimulus. Example: plants bending towards the sun.

Taxis

A directed movement of an animal towards or away from a stimulus. Example: moths flying towards a light.

Kinesis

Random movement in response to an external stimulus. Example: cockroaches scattering when a light is turned on.

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Communication Behaviors

Behaviors that benefit the survival and reproductive success of a group. For example, animals working together to hunt or raise young.

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Innate Behavior

Innate behaviors are controlled by genes and happen without prior learning or experience. Examples include instincts and reflexes.

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Learned Behavior

Learned behaviors develop as a result of an individual's experiences. Examples include learning through observation and trial and error.

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Behavioral Ecology

This study investigates the evolutionary and ecological reasons for animal behavior patterns.

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Fixed Action Pattern

A sequence of unlearned, instinctive behaviors triggered by a specific stimulus.

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Sign Stimulus

The external cue that initiates a fixed action pattern.

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Ultimate Causation

The study of how behaviors aid survival and reproduction in the context of natural selection.

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Proximate Causation

The study of how a behavior is performed and how it's modified.

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Pheromones

A chemical signal used for communication between members of the same species.

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Species Equilibrium

The balance between species arriving (immigration) and species disappearing (extinction) in a specific habitat, like an island.

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Island Equilibrium Model

A model that describes how the number of species on an island reaches stability when the rate of immigration equals the rate of extinction.

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Population Ecology

The study of how populations of organisms change in size, distribution, and density over time.

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Emigration

The process of organisms leaving a population, contributing to changes in population size.

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Pathogens

Disease-causing organisms, including viruses, bacteria, and fungi, that can impact community structure.

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Learning

The modification of behavior based on experience.

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Imprinting

A long-lasting behavioral response to a specific individual or object, typically formed during a critical period in early development.

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Spatial Learning

The ability to remember and navigate the spatial relationships between objects in an environment.

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Cognitive Map

A mental representation of the spatial relationships between objects, allowing an animal to navigate its environment.

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Associative Learning

The ability to associate one environmental feature with another, leading to changes in behavior.

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Classical Conditioning

A type of associative learning where a neutral stimulus (like a bell) becomes associated with a natural stimulus (like food) to elicit a response (like salivation).

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Operant Conditioning

A type of associative learning where behavior is strengthened or weakened based on its consequences.

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Cognition

The acquisition of knowledge and understanding through processes like awareness, reasoning, and judgment.

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Problem Solving

The process of finding a solution to a problem by overcoming obstacles or using a new strategy.

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Social Learning

Learning by observing the behavior of others.

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Culture

The transmission of information through social learning or teaching, influencing the behavior of individuals in a population.

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Foraging

Behaviors related to obtaining food, including strategies for finding, capturing, and consuming prey.

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Optimal Foraging Model

A model that predicts that natural selection should favor foraging behaviors that minimize costs (like energy expenditure and predation risk) and maximize benefits (like food intake).

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Sexual Dimorphism

The differences in physical appearance between males and females of a species.

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Experimental Group

The group in an experiment that is exposed to the factor being tested.

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Control Group

The group in an experiment that does not receive the factor being tested, used as a point of comparison.

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Hypothesis

A statement that can be tested through experimentation, often addressing a relationship between two variables.

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Homeostasis

The process of maintaining a stable internal environment despite external changes.

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Endotherms

Organisms that regulate their body temperature using internally generated heat.

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Ectotherms

Organisms that rely on external sources to regulate their body temperature.

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R-selected Species

A reproductive strategy characterized by producing a large number of offspring with limited parental care, often in unstable environments.

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K-selected Species

A reproductive strategy characterized by producing fewer offspring but investing more energy in their care and development, often in stable environments.

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Trophic Structure

The feeding relationships between organisms in a community.

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Trophic Levels

Different levels in a food chain or web, representing the flow of energy.

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Photosynthesis

The process by which plants use sunlight to convert carbon dioxide and water into organic compounds.

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Chemosynthesis

The process by which organisms obtain energy from chemical reactions.

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Heterotrophs

Organisms that obtain energy by consuming other organisms.

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Population Growth Equation

The change in population size (dN) over a given time period (dt), calculated by subtracting the death rate (D) from the birth rate (B).

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Dispersion

A pattern of spacing among individuals within a population, with individuals clumped together, evenly spread, or randomly distributed.

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Exponential Growth

Unlimited resources lead to continuous growth at a constant rate, doubling the population at a consistent pace, resulting in a J-shaped curve.

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rmax

The maximum per capita growth rate of a population, or the intrinsic rate of increase.

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Demography

The study of vital statistics of populations, including birth rates, death rates, and migration rates, over time.

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Life Table

A table that summarizes the survival and reproductive rates of individuals in specific age groups within a population, tracking a group (cohort) from birth to death.

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Survivorship Curve

A graphical representation of the survival rate of a cohort over time, showing the proportion or number of individuals still alive at each stage.

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Logistic Growth

A model that describes how a population's growth slows down as it approaches its carrying capacity, resulting in an S-shaped curve.

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Carrying Capacity (K)

The maximum population size that a particular environment can sustain, considering available resources.

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Life History Traits

Traits that affect an organism's reproductive schedule and survival, including when reproduction starts, how frequently it occurs, and the number of offspring produced.

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Semelparity

An organism reproduces only once in its lifetime, often producing a large number of offspring.

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Iteroparity

An organism reproduces multiple times throughout its lifetime, typically producing fewer offspring per reproductive cycle.

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Study Notes

Organisms and Environment

  • Organisms respond to their environment with behaviors and physiological processes
  • Stimulus: an external signal causing a response
  • Tropism: growth toward (positive) or away from (negative) a stimulus (plants)
    • Positive phototropism: growth towards light
    • Gravitropism: growth downwards, roots
  • Taxis: directional movement toward or away from something (animals)
  • Kinesis: random movement related to a stimulus (animals)
  • Organisms communicate to benefit survival and reproduction through visual, tactile, audible, electrical, or chemical signals
    • Aposematic coloration: warning coloration (poisonous organisms)
    • Scent marking for territory or mate attraction
  • Animals often cooperate ensuring group survival
    • Individuals may take on specific roles in the group
    • Innate behavior: genetically determined, without prior knowledge
    • Learned behavior: acquired through experience

Learned Behavior

  • Behavior: action carried out by muscles under nervous system control
  • Essential for animal survival and reproduction
  • Subject to natural selection
  • Simple and complex behaviors stimulated by sensory inputs
  • Niko Tinbergen's questions for understanding behavior
    • What stimulus elicits the behavior?
    • How does the animal's experience influence behavior?
    • How does behavior aid survival and reproduction?
    • What is the behavior's evolutionary history?
  • Types of Causation
    • Proximate: how behavior occurs
    • Ultimate: why a behavior occurs
  • Fixed Action Pattern (FAP): unlearned, automatic behavioral sequence (e.g., stickleback)
  • Sign Stimulus: external cue triggering a behavior
  • Migration: regular, long-distance movement
  • Behavioral Rhythms
    • Circadian Rhythm: daily cycle (sleep-wake)
    • Circannual Rhythm: annual cycle (migration)

Learning and Cognition

  • Imprinting: long-lasting behavioral response to a particular individual or object, usually in young animals
  • Spatial Learning: creating a memory of the spatial environment
  • Cognitive Map: mental representation of the surroundings
  • Associative Learning: associating one environmental feature with another (classical and operant conditioning)
  • Cognition: awareness, reasoning, recollection, and judgment (involves problem-solving)
  • Social Learning: learning from observing others

Population Ecology

  • Population: group of individuals of the same species inhabiting the same area, interacting and breeding
  • Exponential Growth: population increasing at a constant rate in unlimited resources
  • Logistic Growth: population growth rate slows as it approaches carrying capacity
  • Carrying Capacity (K): maximum population size an environment can sustain
  • Population Density: number of individuals per unit area
  • Density-dependent factors: birth/death rates vary with density (e.g., food, predators, disease)
  • Density-independent factors: birth/death rates remain the same (e.g., natural disasters)

Community Ecology

  • Community: group of populations of different species interacting closely enough to affect each other
  • Interspecific Interactions: +/- interactions between species
    • Exploitation: +/- e.g., predation, herbivory, parasitism
    • Competition: -/- e.g., for resources
    • Symbiosis: close relationship (+/- or 0) e.g., mutualism, commensalism
  • Niche: sum of species' use of biotic and abiotic resources.
  • Niche partitioning: similar species coexisting by using resources differently
  • Character Displacement: traits diverge more in sympatric than allopatric populations
  • Community stability: tendency to reach and maintain a relatively stable composition
  • Resilience: the ability to recover from disturbance

Ecosystem Ecology

  • Ecosystem: living and nonliving components of an area
  • Trophic Levels: feeding relationships in an ecosystem
    • Producers, Primary consumers, Secondary consumers, Tertiary consumers
  • Energy flow: transfer of energy through trophic levels
  • Biomass: total mass of organisms in an area
  • Energy pyramid: loss of energy as it moves through trophic levels
  • Biogeochemical Cycles: movement of nutrients through ecosystems
  • Ecosystems and Biodiversity: factors affecting community diversity

Biodiversity

  • Species Richness: Number of different species
  • Relative Abundance: proportion of each species in a community
  • Species Diversity: combines richness and evenness (relative abundance of species)
  • Ecological Disturbances: events that remove or alter resources
  • Intermediate Disturbance Hypothesis: intermediate levels of disturbance tend to support higher numbers of species
  • Succession: changes in species composition of a community over time (ex: primary and secondary succession)
  • Biogeographic Factors: influence ecosystem diversity
    • Latitudinal Gradient: diversity increases towards equators
  • Species-area curve: the larger the geographic area, the greater the species diversity
  • Ecosystem Services: important benefits provided by ecosystems to humans
    • Water purification, pollination, nutrient cycling (ex.)

Human Impact

  • Biological Magnification: toxins accumulating more at higher trophic levels
  • Invasive Species: species introduced to new ecosystems negatively impacting native biodiversity.

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