Exam 4 Review questions Flashcards
A population is a group of interacting populations of different species living together in the same area
False
Trophic levels are feeding levels based on position in a food chain
True
Organisms at the base of the food chain are consumers and higher up the food chain than producers
False
Niche overlap results in competition
True
Ecosystems are made up of the living and non-living components of the environment
True
Temperate Forest
Characterized by moderate winters and rainfall
Tropical forest
Characterized by warm temperatures and sufficient rainfall
Desert
Characterized by extreme dryness
Tundra
Characterized by low-growing vegetation and permafrost
Grassland
Characterized by perennial grasses and non-woody plants
Parasitism
One member benefits, the other is harmed
Mutualism
Both members benefit
Commenalism
One member benefits, the other is unharmed
Predation
One organism feeds on another
Competition
Species rely on same resources
Carbon Cycle is the movement of carbon atoms via natural processes such as
Decomposition, photosynthesis, respiration
What makes an organism a keystone species?
Its loss would negatively impact the community and ecosystem
Which is not necessarily true of a keystone species?
It is the most abundant species in the community
Which is NOT true of consumers?
They are photosynthetic
A graph of growth of the human population has what shape?
J
The human population is growing exponentially large due to
Available resources, low death rate, higher birth rate, improved medical treatment and care
The growth rate of a population is calculated from the _____ for that population
Differs between birth and death rate
Which of the following conditions would lead to the fastest population growth?
Birth rate > death rate; immigration > emigration
Removal of a predator from an ecosystem may do all of the following EXCEPT
Allow prey populations to remain above carrying capactiy
