Name__________________________________________
PSSA Science Review Sheet
Interactions of Living Things
Definition
Of or characterized by the absence of
life or living organisms.
Example
moisture
Biotic
Pertaining to life. Something that is
living that affects an ecosystem
Plants
Herbivore
An animal that eats only plants
Birds, squirrel
Carnivore
An animal that eats meat
Wolves
Omnivore
An animal that eats both plants and
meats
Bears
Producer
An organism that act as a food source
for other organisms in the food chain
Plants
Consumer
A person or thing that eats or uses
something
Lions
Abiotic
Decomposer
Trophic Levels
Symbiosis
Mutualism
Parasitism
Predation
Commensalism
Cells and Genetics
Cell
Prokaryotic
Decomposers are organisms that
break down dead or decaying
organism
Trophic Levels are the feeding
position in the food chain
Examples include fungi, bacteria, and
protists
In close and often long term
interaction between two or more
different biological species.
A relationship between two species of
organisms
-commensalism
-parasitism
-amensalism
The algae has a place to live
A relationship between organisms
where one parasite benefits from the
host
A predator eating prey farther down
on the food chain.
Fleas attach to a dog
A relation between two kinds of
organisms
Barnacles on a whale
The smallest structural and
functional unit of an organism
Neurons
Producers, consumers, and
decomposers
Snakes constricting and eating mice.
A group of organisms whose cells lack Salmonella
a membrane-bound nucleus.
Eukaryotic
Plant/Animal Cell
Cells of or derived from eukaryote
characterized by having a distinct,
membrane-bound nucleus.
Shape of each
Plant: Round and rectangle
Animal: Irregular
Animals, plants, fungi
Two extra plant cell parts:
Cell wall, chloroplasts
Endangered Animals and Environmental Issues
Biomes
An ecosystem or home for animal
species and plants.
Rainforests, tundra, desert, and
marine
Endangered Species
Plant or animal existing in small
numbers near extinct
Indiana Bat
Pest
A destructive insect or other animal
Bees
that attacks crops, food, livestock, etc.
Is a single identifiable source of air,
Train
water, thermal, noise or light
pollution
Contamination that originates from
Lake, stream, land area
many locations that all discharge into a
location
Point Source Pollution
Nonpoint Source Pollution
Integrated Pest Management
A variety of pest control methods that
eliminate pests.
repairs, traps, bait, poison, etc.
Renewable Resources
A resource that can be used over and
over
Water
Non-renewable Resources
Regulation
Recycling
Dichotomous Key
Substances that, once used, cannot be
replaced in this geological age
The action or process of regulating or
being regulated
To treat or process so as to make
suitable for reuse
Divided or dividing into two parts or
classifications.
Oil, gas, coal, copper, gold
Snow leopard population so it will
not become extinct.
Paper, aluminum
Examples of a dichotomous key in
written and graphical form for a specific
list of items