Characteristics of Life
How many characteristics of life must something have in order to be considered living?
ALL 7 OF THEM!!
This level of ecological organization focuses on a single type of organism living in a specific area.
Population
This term describes the maximum number of individuals of a species that an environment can support sustainably.
Carrying Capacity
This type of population growth occurs when resources are unlimited, resulting in a rapid increase over time, often represented by a J-shaped curve.
Exponential Growth
In this ecological interaction, one organism kills and consumes another, exemplified by a lion hunting a zebra.
Predation
List the 7 characteristics of life.
Organization, Homeostasis, Metabolism, Response to stimuli, Reproduction, Evolution, Development (Change over time)
Give an example of one biotic and one abiotic factor you would find in an ecosystem.
Biotic: any plants or animals
Abiotic: dirt, air, water, sunlight, rocks, sand
Why do populations have carrying capacities? Why can’t populations grow forever?
There are limited resources and this stops populations from growing.
This population growth model describes how a population grows rapidly at first but slows as it approaches the carrying capacity, forming an S-shaped curve.
Logistic Growth Curve
Name the four types of symbiotic relationship we discussed in class.
Parasitism, Commensalism, Mutualism, Predation
True or False: The terms biotic/abiotic are synonymous with living/dead.
FALSE: Dead things are considered to be biotic since they were once alive or part of a living thing.
List the levels of ecological organization in order from LARGEST to SMALLEST.
Biosphere, Biome, Ecosystem, Community, Population, Organism
In the context of carrying capacity, this type of growth curve shows a population increasing rapidly at first but eventually leveling off as it reaches the environment's carrying capacity.
Logistic Growth Curve
Which species had the higher initial population, the native species (solid line) or the new species (dotted line)?
(Picture on slide)
Native species (solid line)
In this relationship, one organism benefits while the other is not significantly affected, like a bird nesting in a tree.
Commensalism
This is an example of what characteristic: Giraffes used to have both long and short necks but over time, only long necked giraffes survived.
Evolution
All of the birds of a single species that live in the trees in front of East Leyden would describe what level of ecology?
Population
Which limiting factor will have a greater effect in a city, density dependent or density independent?
Density-dependent limiting factor
This factor includes elements like food supply, habitat space, and water availability that can limit population size. These are responsible for setting the carrying capacity of a population.
Limiting Factors
A tapeworm living in the intestines of its host & a tick on a dog are examples of what type of symbiotic relationship?
Parasitism
Give an example of Homeostasis that occurs in the human body.
Sweating, shivering/goosebumps
In a temperate forest, the interaction between deer, wolves, and various plant species represents this level of ecological organization, which includes multiple species interacting within the same area.
Community
A sudden drought leads to a significant drop in the plant population in an area. This illustrates what type of limiting factor?
Density-Dependent Factor
If a population's birth rate exceeds its death rate and immigration is greater than emigration, what will likely happen to the population in the long term?
It will stay around its carrying capacity.
Bees pollinating flowers while feeding on nectar is an example of what type of symbiotic relationship?
Mutualism