Trophic Levels
An organism that inly eats plants
What is an herbivore?
Living things that make their own food from sunlight
What are producers (or autotrophs)?
People, bacteria and animals are what part of the environment?
Biotic
Which organism in a food web would contain the lowest concentration of chemical pollutants?
producer
Young wasps are eating the tomato hornworm that is their host. This is an example of_________.
What is parasitism?
What is predator (also consumer/carnivore)?
Organisms occupying the same niche in their environment will do this to avoid competition
what is resource partition
A multi-chained diagram that shows how energy in ecosystems flows from one organism to another.
What is a food web?
The layer of frozen ground found in a tundra is called
What is permafrost
Two members of the same species fight over certain food. Members of different species try to take over a certain nesting area. These are both examples of _________.
What is competition?
In a food chain/web arrows demonstrate
What is flow of energy?
When two organisms play the same role in their environment, these two terms describe how they co-exist without constant competition
what is fundamental niche and realized niche
These factors are the reason why no species can grow uncontrollably.
What are limiting factors.
Which biome is characterized by having the highest amount of biodiversity?
What is a tropical rainforest
In this type of symbiosis, organisms both benefit from each other.
What is mutualism?
A triangular diagram that shows an ecosystem’s loss of energy
What is an energy pyramid?
The logistic growth of a population is also known as
These organisms are responsible for returning nutrients back into the soil and ecosystem.
what are decomposers
If a plant is covered in pesticides, what part of the food chain will be the most affected?
The tertiary consumers (the top of the food chain) will be the most affected because the pesticide does not go away like energy does
Mycorrhizae is the name given to the symbiotic relationship between certain plant roots and fungi. In this relationship the fungi increase the plant roots’ water and nutrient absorption from the soil, while receiving energy produced by the plant in order to use for its own life processes.
This is an example of which type of ecological relationship?
Mutualism
Shows the amount of living matter in a food chain
What is a biomass pyramid?
Why is energy transfer in an ecosystem inefficient?
Energy decreases as we go up a food chain; only 10% is passed on to the next level and the other 90% is lost as heat.
Why are the number of trophic levels limited?
Energy is lost at each level so there is not enough energy left to support more levels
The theory that no two species can inhabit the same ecological niche due to competition is called
what is the theory of competitive exclusion
When a long-term change takes place in two species because of their close interactions with one another, the change is called __________.
What is coevolution?