Biology Flashcards
Abiotic factors
The non - living characteristics of an ecosystem
Atmosphere
The thin layer of gases that surrounds the earth
Biomes
Large geographical regions define by climate with a specific set of biotic and abiotic features
Biosphere
The zone in, on, and around earth where life can exist
Lithosphere :
Earth’s land
Hydrosphere :
Earth’s water
Biotic factors
Living things, their remains, and the features, such as nests, associated with their activities
Cellular respiration
The process by which sugar and oxygen are converted into carbon dioxide, water, and energy to provide energy for the cell
Cellular respiration reaction:
Sugar + oxygen —–> carbon dioxide + water
Consumers
Organisms that obtain their energy by consuming other organisms or the products of other organisms
Ecological niche
The function a species serves in its ecosystem, including where it lives, what it eats, and how it behaves
Food webs
A representation of the feeding relationships within a community
Habitat
The environment where an organism lives
Photosynthesis
The process by which the sun’s energy is converted into chemical energy
Photosynthesis reaction :
Carbon dioxide + water ——–> (light energy) sugar + oxygen
Producers
An organism that makes its own energy - rich food using the sun’s energy
Sustainable ecosystem
An ecosystem that mantains relatively constant biotic and abiotic features forever
Trophic level
The level of an organism in an ecosystem depending on its feeding position along a food chain
What is a biogeochemical cycle?
A biogeochemical cycle shows the movement of matter through the biotic and abiotic environment
What is succession?
The gradual, and usually predictable, changes in the composition of the community and abiotic conditions following a disturbance
What is fragmentation?
The state of when a habitat is still present, however, it is divided up into smaller pieces
What are the three parts of the biosphere?
Atmosphere, Lithosphere, and Hydrosphere
What is an example of an abiotic factor and a biotic factor?
A rock and a nest
A population is all the members of the same _________
Species
A food web is more _____________ than a food chain
sustainable
An invasive species usually have some type of _____________ over a natural species
Advantage
The function that a species serves in an ecosystem is called….
The ecological niche
The arrows in a food chain show the direction of _________ _____
Energy flow
Only _____ of the energy is passed along at each stage in a food chain
10%
What is the primary consumer in a food chain?
Herbivore
What is the source of all energy in an ecosystem?
The sun
Which pyramid is broken into blocks representing the number of organisms at that trophic level?
Numbers pyramid
In the water cycle what is the name of the process where water moves from plants to clouds?
Transpiration