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Ecology Sec 2.1

relationships, levels of organization, ecology basics

branch of biology that studies the relationships among organisms and the interaction of the organisms with their environment ECOLOGY
portion of earth that supports life. Literally "ball of life" but only a small portion of this supports life... a thin layer several km. above earth into atmosphere and several km. below ocean surface to deep-ocean vents BIOSPHERE
living factors in organism's environment BIOTIC FACTORS
nonliving factors in organism's environment ..including temperature, amount of sunlight, type of soil etc ABIOTIC FACTORS
What is added to a community to make an ecosystem ABIOTIC FACTORS
Smallest unit of MATTER ... join together to make molecules atoms
things like water or carbon dioxide that are made of different atoms joined together with chemical bonds molecules
nitrogen base molecules, can join with sugar molecules and phosphate molecules to form DNA nucleotides with can join together to make a ______ called DNA macromolecule
macromolecules can join together to form things such as mitochondria, chloroplasts or a nucleus within a cell organelles
The smallest unit of life... the smallest unit of structure and function in organisms. Cells
One cell can live independently in an environment and would be considered to be at the ___ level of organization organism
similar cells can join together for a certain function .. examples of these may be nervous or muscular____ Tissue
Various tissues join together to form ______ that performs a certain function an organ
the stomach, liver, pancreas, intestines, esophagus and other organs get together to form a/an organ system ( okay to just call system)
all of the organ systems get together to form a multicellular ____ organism
organisms of the same species that live in the same area at the same time are called a/an population
group of interacting populations in the same area at the same time community
a biological community and all the abiotic factors that affect it ecosystem
This ecological level of organization can be small or large , the boundaries can be flexible and change...these can also overlap ecosystem
a group of ecosystems that share the same climate and types of communities biome
all of the biomes combine to join the ____ biosphere
Temperature, humidity, and windspeed are examples of ____ environmental factors abiotic
predators, plants, fungi, and bacteria are examples of _____ environmental factors biotic
the area where an organism lives is called their____ habitat
All of the trout in a stream POPULATION
physical location a community, population and individual live and to which it is adapted habitat
a dung beetle uses animal droppings as a food source niche
general habitat of a shark ocean
fungus and bacteria are decomposers in an environment. This is describing their____ niche
the role or position ( job) that an organism has in its can also be thought of as how the organism meets its needs for food, shelter, and reproduction niche
when more than one organism uses a resource at the same time ( resources are food, water , space, light) competition
the act of one animal consuming another for food predation
organism that pursues another organism for food predator
the bird or mouse that a cat can catch in order to eat it prey
close relationship that occurs when two species ( it can be more) live together... one needs to benefit should be a prolonged relationship symbiosis
what are three types of symbiosis mutualism, commensalism, and parasitism
symbiosis where both species benefit mutualism
symbiosis where one species is benefited and the other has a neutral reactions ( not harmed or helped) commensalism
symbiosis where one species is benefited and the relationship is costly to the other parasitism
Name an external and an internal parasite flea, tapeworms ( other acceptable answers-look them up)
physical environment that surrounds ( influences and is used by) a population habitat
A mutualistic relationship between a fungus and algae ..where the fungus provides habitat for the algae and the algae provides food for both of them Lichen
An orchid or bromeliad on a rainforest tree. the bromeliad or orchid is getting more sunlight for growth and the rainforest tree does not appear to be harmed commensalism
Usually the parasite does not ______ the host, but it does ________ the host kill, harm or weaken
Created by: shemehl



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