Evolution
When a species with new alleles starts breeding with other like species, this is called...
The evolution pattern that has periods of slow change interrupted by periods of rapid change is known as the theory of
punctuated equilibrium
Does evolution affect an entire population or just a specific organism?
Entire population
____ is a relationship that exists between two or more organisms that are fighting for limited resources
competition
What effect do invasive species have on an ecosystem?
They typically have a negative effect and disrupt an ecosystems biodiversity
A whale's leg bone is an example of
vestigal structure
The fossil record provides numerous examples of past life and can show how an organism has evolved over millions of years. The form and function of some organisms remains the same throughout the years. When this happens, the ecosystem is considered to be in
stasis
Structures are similar in appearance but not in structure
analogous
A bee getting nectar from a flower and pollinating it is an example of what type of relationship?
mutualism
the organism at the top level, typically the tertiary or quarternary consumer
What do mutations lead to?
Genetic variation
The limbs of whales, bats and humans are similar in structure but also have differences in the arrangement of bones in the forelimbs. What would be an explanation for this?
They all have a common ancestor with homologous structures but each one has a different function.
What is gradualism?
When evolution occurs slowly and steadily
Parasitism is when one organism benefits and the other_____
is harmed/ not benefited
What happens to the stability of an ecosystem that has high biodiversity?
It increases
Organisms with greater reproductive success have a greater chance of
survival
Geologic or behavioral barriers lead to a new species forming over time.
What is speciation?
True or False: Natural selection produces change in individuals that are hereditary
False, it causes a change in populations
Remora fish hitching rides on sharks is an example of what type of relationship?
Commensalism
Which nitrogen cycle process is occurring when bacteria convert ammonium to nitrite and then into nitrate?
nitrification
Bacteria helps to break down nitrogen and convert it into usable forms for the plant
Structures that have different mature forms but develop from the same embryologic tissues are known as this.
What are homologous structures?
What would cause the light mice population to decrease more over time vs. the dark mice population if their habitat is igneous rock?
What is the difference between decomposers and detritivores?
Decomposers break down dead organic matter with enzymes and detritivores eat and digest dead organic matter
A group of organisms of the same species is a ___
Population