Biolgy Flashcards
An organism that cannot produce its own food
Heterotroph
Biodiversity is a term used to describe difference between…
A variety if organisms
An example of a heterotroph is a
Deer
An organism that can make its own food is called a
Autotroph
A group of organisms of the same species living together
Population
A group of different species living together is called a
Community
An example of an autotroph is a
Maple tree
Although top carnivores are not preyed upon thy nay be used for food while living by
Parasites
The term “consumer” is used to define an organism that
May eat plants or animals
The told that an organism plays in the ecosystem is called a
Niche
Before nitrogen can be used by living organisms it must be converted to water soluble
Nitrates
The mathematical equation that best describes the population growth rate of Canada is
Population growth = (births + immigration) - (deaths + emigration)
The process of photosynthesis
Consumes energy from sunlight
Summarize photosynthesis
Carbon dioxide + water = sugar + oxygen
Fungi cannot manufacture food but must obtain it from
Either dead or living material
Element with the highest concentration in the atmosphere
Nitrogen
The carrying capacity of a population is defined as
The maximum number if individuals supported indefinitely in an ecosystem
The bacteria that break down nitrates and return them into the nitrogen gas back into the atmosphere are called
Denitrifying
The biome with the greatest temperature range on an annul basis
Deciduous forest
Which biome has the greatest kaput of precipitation on an annual basis
Tropical rainforest
The removal of all the trees from a forest is called
Clear cutting
Layers of soil from the top downward
Litter, topsoil, subsoil, bedrock
The biome with the thickest layer of topsoil
Grassland
Biome with the least amount of precipitation
Tundra
Most fragile biome in Canada
Tundra
The biome that covers the greatest amount of Canada
Boreal forest
Normally rainwater has a ph that is
Slightly acidic
The biome with the greatest biodiversity in Canada
Deciduous forest
A shallow eutrophic lake would have
Low oxygen levels and a high concentration of nutrients
An organism that is a characteristic of water quality o a particular ecosystem is
An indicator
A deep cold oligotrophic lake would have
High oxygen levels and low concentration of nutrients
Not an indicator of water quality
Concentration is dissolved chlorine
An oil spill from a tanker is a type of pollution known as a
Point source
Extinct
A species that has disappeared everywhere
Threatened
A species that is likely to become endangered if factors are not reversed
Extirpated
A species that no longer exists in one part of Canada but may exist in another
Endangered
A species close to disappearing everywhere
Vulnerable
A species at risk because of low or declining numbers
Natality
Birth rate
Mortality
Death rate
Immigration
Individuals moving into a population
Exponential
Every increasing growth rate
Emigration
Individuals moving out of a population
Arithmetic
Gradually increasing growth rate
Bedrock
Solid underlying layer
Subsoil
Stones and small amounts of organic matter
Topsoil
Small pieces of rock and humus
Litter
Partially decomposed lees and grasses
Sources of water pollution
Waste treatment plant, oil spills
