Organisms + Relationships
What type of relationship can be described as "+/+"
Mutualistic
What organisms are at the bottom of an ecological pyramid and are the first step in the food chain/web?
Producers (primary producers)
Describe a community
Organisms of different species living in a given area.
Provide an example of a density dependent factor
answers vary
What is the brain of the cell?
nucleus
Describe commensalism
One organism is harmed, the other is unaffected
How much energy is passed on to each level of a food chain/ecological pyramid? What happens to the rest?
10%
90% is lost as heat
What is a keystone species? Describe the sea otter as a keystone species
A keystone species is vital to the survival of an ecosystem
Sea otter removal would cause the sea urchin population to increase resulting in a decrease in the kelp. In return, this will cause CO2 to build up in the water and result in an unstable ecosystem.
What type of dispersion would include organisms not living in a designated space?
Random
What country did Mr. Ruddy have to travel to get his visa?
Canada
In a competition match, what organism would win the match?
The most adapted/highest fitness/strongest
What organisms are at the end of the food web/food chain where an organism will break down organic matter and release nutrients back into the soil?
decomposers
What is the first step in ecological succession
A disturbance event
What is a carrying capacity? What type of population growth demonstrates this?
Limit a population can hold; logistic
What four teams are in the NFL playoffs currently?
Lions, Ravens, Chiefs, 49ers
List the levels of organization from most complex to simplest
biosphere -> biome -> ecosystem -> community -> population -> individual
Pyramid of Numbers
Pyramid of Biomass
Pyramid of Energy
What are the two main pioneer species during primary succession
lichen and moss
Describe exponential growth
unlimited resources, population is increasing in size over time
Who is the actor that stars in Mission Impossible?
Tom Cruise
Describe the predator vs prey relationship
- Prey increases, predators increase
- Predators increase, prey decreases
If you had 432,000 kJ of energy available to plants, how much energy would be available for the secondary consumers?
Why is a climax community rarely reached?
another disturbance event takes place
Calculate the PGR:
- death rate = 7.4
- birth rate = 20.6
- migration rate = -9.2
2.24%
Name two actors on the TV show stranger things
Answers vary