Biodiversity
What is biological evolution and name a mechanism for biologic evolution.
The process whereby the earth’s life changes over time through changes in genes of populations of organisms. One mechanism is natural selection.
Which Biome is coldest?
Tundra
Define or give an example of resource partitioning
It is when species divide up/partition a similarly scarce resource
Are most invasive species "R" or "K" strategists?
R
What size and distance does an island have to be to have more biodiversity?
larger island near the mainland
What type of natural selection favors both extremes.
disruptive
The East Coast of the US has the largest amount of which biome?
Deciduous Forest
What is the difference between an adaptation and an evolution?
Adaptation generally refers to change that leads organisms to be suited to their local circumstances in some way, while evolution typically refers to changes in genes.
Climate varies with latitude and ________ of an area.
altitude
Describe the process of coevolution.
Two different species with a close relationship evolving together...example plant and pollinator.
What are two characteristics determine the type of biome?
temperature and precipitation
What is the difference between intraspecific and interspecific competition.
Intra: with one species... lion vs lion
Inter: between two different species...Lion vs Hyena
A forest that has been clear cut will go through which kind of succession?
secondary
What does biodiversity indicate about an ecosystem? Why?
High DI= stable, resilient ecosystem
Differentiate geographic isolation and reproductive isolation.
Geographic- land mass; reproductive- cannot interbreed anymore
What biome are you in if you see lions and giraffes?
Savannah
What is mutualism and give an example
the interaction that benefits both species. an example would be birds that ride on the backs of large animals
Scientists believe that this accounts for about 40-50% of endangered species.
Invasive species
Distinguish between keystone and indicator species. Name one of each!
Discretion.
What is bottlenecking and give an example.
When an event drastically reduces a population (genetic pool)...Cheetahs
Where are the largest boreal forests found in the world?
Canada and Russia
Describe or give an example of how character displacement leads to speciation.
Two similar species that inhabit the same environment and compete will "displace" one or more characteristics of each other in order to survive...
What are the 4 conditions that are necessary for evolution/natural selection to occur?
1. overproduction
2. variation
3. limited resources/selective pressure
4. Differential reproductive success/the variation has to help them survive and reproduce