Science Final Flashcards
Science Final (80 cards)
The Community of organisms that live in a particular area, along with their non living environment
Ecosystem
The environment which provides the things a specific organism needs to live, grow, and reproduce
Habitat
The living parts of a habitat.
Examples: animals, trees, plants
Biotic Factors
The non living parts of a habitat.
Examples: water, space, rocks, and light
Abiotic Factors
All the different populations that live together in an area.
Community
New individuals enter by being born into it, then die at any period of time
Population
Moving into a population
Immigration
Moving out of a population
Emigration
Number of individuals/ Unit area=
Population Density
Example: Suppose an ecologist estimates there are 800 beetles living in a park measuring 400 square meters. The population density would be 800 Beetles.
Answer: 2 square units
An environmental factor that causes a population to stop growing or to decrease in size.
Limiting Factors
Describes how different organisms eat each other, starting out with a plant and ending with an animal
Food Chain
An organism that can make its own food (photosynthesis)
Example: Plants
Producers
Animals that eat each other (2 answers)
Secondary consumers or carnivores
A carnivore eats another carnivore
Tertiary Consumer
Eats decaying matter (like dead plants and animals) by breaking them down. They help put nutrients back into soil for plants to eat.
Examples: Worms, Bacteria, Fungi
Decomposers
In any ecosystem there are many food chains. Most plants and animals are part of several chains. When you draw all the chains together you end up with a…
Food Web
Tropic Levels
Level 1: Plants-
Level 2: Animals that eat plants-
Level 3: Animals that eat herbivores-
Level 4: Animals that eat carnivores-
Level 5: Animals at the top of the food chain. Nothing eats these animals-
Level 1: Producers
Level 2: Primary consumer
Level 3: Secondary consumer
Level 4: Tertiary consumer
Level 5: Apex predator
Energy is (#1- Lost or #2- Added) in the Energy pyramid?
1- Lost
The role of an organism in its habitat.
Examples: how it obtains food, the type of food it eats, and what other organisms eat it
Niche
The struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time.
Competition
An interaction in which one organism kills another organism for food. Affects population size.
Predation
One species benefits and the other is neither helped nor harmed
Example: birds build nest in trees. The tree is unharmed
Commensalism
Two species benefit from each other
Example: oxpecker birds and zebras
Mutualism
