Study sets, textbooks, questions
Upgrade to remove ads
Ecology - 9th Grade Biology
Terms in this set (63)
Scientific study of interactions among organisms and between organisms and their environment
An individual animal, plant, or single-celled life form
Groups of individuals belonging to the same species that live in the same region at the same time
A group of interdependent organisms inhabiting the same region and interacting with each other
A biological community of interacting organisms and their physical environment.
The number of species within a specific habitat.
Process in which plants take in sunlight, carbon dioxide, and water to make glucose.
The process by which cells use oxygen to produce energy (ATP) from food
The transfer of carbon from the atmosphere into organisms and back again
The transfer of nitrogen from the atmosphere to the soil, to living organisms, and back to the atmosphere
Process of converting nitrogen gas into ammonia
Ammonia is converted to nitrate ions (NO3-).
Decomposers convert organic waste into ammonia
Lightening in the atmosphere breaks apart nitrogen, which then combines with oxygen forming nitrogen oxide.
Conversion of nitrates into nitrogen gas
The transfer of phosphorus atoms from rocks through living organisms and back to rocks.
Layer of sediments formed at the bottom of oceans
Organism that makes its own food
Organism that makes its own food (Another name for producer)
Organism that must eat other organisms for nutrients
An organism that cannot make its own food and must consume other organisms
An organelle found in plant cells that stores chlorophyll
Green pigment in plants that absorbs light energy used to carry out photosynthesis
Group of compounds made of sugars
Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates
A diagram showing a series of events in which one organism eats another and obtains energy.
An organism that only eats plants
An organism that eats only animals (meat)
An organism that eats both plants and animals
An organism that eats only dead things
An organism that breaks down dead and decaying matter
An organism that eat only one organism or a small group of organisms
An organism that eats just about anything
Step in a food chain or food web
A system of interlocking food chains
A diagram that shows the amount of energy that moves from one feeding level to another in a food web
Unit of energy measurement, commonly used in food pyramids
A measure of the total dry mass of organisms within a particular region
Diagram representing the biomass in each trophic level of an ecosystem
Pyramid of Numbers
representation of the number of individual organisms in each trophic level of an ecosystem
Place where an organism lives
An organisms particular role in its ecosystem
An inherited behavior that does not depend on the environment or experience
An unweaned (depends on nutrition from mother) child or animal
Automatic, oriented movement toward or away from some stimuli.
A period of decreased activity that some animals experience in the summer
A period of inactivity that some animals experience in winter that allows them to survive on stored body fat
A decrease in response caused by repeated exposure to a stimulus.
A type of learning in which an animal (typically a child) becomes attached to another animal, thinking of it as a trusted figure
A type of learning in which one learns to link two or more stimuli and anticipate events. Example includes Pavlov's dogs.
Trial and Error
The process of experimenting with various methods of doing something until one finds the most successful way to do something
A relationship in which two different organisms live in close association with each other
A relationship between two species in which both species benefit
A relationship between two organisms in which one is harmed and one benefits
A relationship between two organisms in which one organism benefits and the other is unaffected
A relationship in which one organism is harmed and the other is unaffected
An interaction in which one organism captures and feeds on another organism
Largest number of individuals of a population that an environment can support
Any biotic or abiotic factor that restricts the existence, numbers, reproduction, or distribution of organisms.
Density Dependent Factors
Examples include Competition, Predation, Parasitism, and Disease.
Density Independent Factors
Examples include Natural Disasters, Seasonal Cycles, and Human Activity
Sets with similar terms
Ecology Quiz Bio.2.1
Vocabulary Living Systems and the Enviro…
Other sets by this creator
APES Cram Chart
Comparative Politics: Russia
Unit 6 Practice-Memory and Emotion AP Psychology
My Worst AP US Government and Politics Terms + Sup…
Luis carries a box of lab supplies across the classroom. Which statement explains why he is not performing work on the box? F.The box is being pulled downward with greater force than the lift force. G.The lab supplies do not weigh enough for work to be performed on the box. H.The force exerted by gravity has overcome the force being exerted by Luis. J.The box is not moving in the same direction as the force being exerted on the box.
Draw a simple diagram of a plant root tip. Indicate where the three types of plant tissue are located.
select the best answer from the four alternatives. Which of these best describes the angle of refraction? (a) the angle between the refracted ray and the normal (b) the angle between the refracted ray and a reflective surface (c) the angle between the refracted ray and the reflected ray (d) the angle between the refracted ray and the incident ray
Name three unifying themes found in biology.