Characteristics of Life
Describe the cellular composition characteristic of life.
All living things are composed of one or more cells
Define biology.
The scientific study of living organisms
Describe an ecological niche.
Define a population.
A group of organisms of the same species that interbreed with each other
How do plants take in CO2?
From the atmosphere
Describe the transport characteristic of life.
Includes the absorption of materials and circulation of materials to all parts of the organism
Is soil biotic or abiotic?
Abiotic
What type of symbiotic relationship so whales and barnacles have?
Commensalism
What are the two main types of sampling?
Mark recapture and plot sampling
How do plants release CO2?
Carbon fixation by consumers, or decomposition of dead trees
Describe the nutrition characteristic of life.
Obtaining energy through ingestion, digestion, and egestion
What are the 4 main spheres of Earth?
Geosphere, Biosphere, Hydrosphere, Atmosphere
What does it mean if a species is endemic?
That species only exists on one place
These two terms often get confused but one is defined as movement into a population and the other is defined as movement out. Which is which?
Immigration - Movement of individuals into a population
Emigration - Movement of individuals out of a population
There are four main ways that CO2 can enter the atmosphere. What are they?
Plant respiration, animal respiration, decomposition, and fossil fuel combustion
Describe the synthesis characteristic of life.
Chemical reactions in which smaller molecules combine to form larger ones
What is the smallest unit of life?
The cell
What is a keystone species?
A species that has a disproportionately large affect on a community relative top its size and abundance; no other species could fill its niche
You are a scientist observing a species and its growth rate. You discover that the population went from a slow increase too a very fast increase. What type of population growth model would you expect to see/use for this population?
Exponential Growth Model
Where is 90% of atmospheric water from?
Evaporation from bodies of water
List all 9 characteristics of life.
Cellular Composition, nutrition, transport, respiration, excretion, synthesis, growth, regulation, reproduction
What is missing? Primary Producer, Primacy Consumer, _________ ________, Tertiary Consumer
Secondary Consumer
A fire has burned through a forest. After some time, grasses start to grow on soil that remains after the fire. What is this an example of?
Secondary Succession
Describe the difference between exponential and logistic growth rates.
Exponential Growth - Growth with unlimited resources
Logistic Growth - Growth with limited resources; can often find the carrying capacity
90% of water comes from evaporation, where does the remaining 10% come from?
Water is taken up by plants and evaporated through the leaves