What type of succession occurs on abandoned agricultural fields?
secondary succession
100
Which of the following is an example of parasitism?
A) a lichen
B) a clownfish living among the tentacles of a sea anemone
C) tapeworm living in the gut of its host
D) bees feeding on nectar from a flower
C) tapeworm living in the gut of its host
100
Algae->zooplankton->small fish-> large fish->birds. Mercury is passed through this food chain. Which organism is the first to absorb pollutants?
Algae
100
Define carrying capacity
The maximum number of organisms that an ecosystem can support.
100
This type of organism gets energy by eating only plants.
Herbivore
200
What type of disturbance would cause primary succession?
volcanic eruption or receding glacier
200
Define predation.
One organisms hunts, kills, and eats another organism.
200
Algae->zooplankton->small fish-> large fish->birds. Mercury is passed through this food chain. Which organisms would be better to eat a small fish or large fish? Explain your answer.
Small fish because they don't have as much mercury in their bodies since they are lower on the food chain.
200
Why can’t organisms occupy the same niche?
There will be too much competition and organisms will be forced to move or will die.
200
This type of organism receives energy by breaking down dead and decaying organisms.
Decomposer
300
Provide one SPECIFIC reason why lichens are valuable pioneer species.
They change nitrogen into usable forms or create soil.
300
What is the difference between a niche and a habitat?
A habitat is where an organism lives and a niche is an organism's habitat and how it lives in the environment.
300
Why are producers the first to absorb the pollutant?
b/c they are the first in the food chain
300
What is the term for organisms who create their own food through the process of photosynthesis or chemosynthesis?
autotrophs or producers
300
What's the difference between a food web and a food chain?
A food chain shows how energy is passed from one organism to another. A food web shows a series of food chains linked together (It shows the variety of things an organism can eat or be eaten by.)
400
Why can't large trees be a good pioneer species during primary succession?
The disturbance that caused primary succession left the land with only rocks (no soil). Large trees can't be good pioneer species because they need a lot of soil for their roots.
400
Name 3 things organisms might compete over.
Answers may vary. Food, water, space, mate, etc.
400
What happens to falcons or large birds at the end of the food chain if DDT is released into the water?
Eggs thin and break during incubation causing populations to drop.
400
Which organelle makes proteins?
ribosome
400
Another word for consumer is
Heterotroph
500
Describe two differences between primary succession and secondary succession?
Primary succession is slower than secondary. Primary occurs when there is no soil left unlike secondary.
500
Provide an example of two organisms who display commensalism. Explain how their relationship shows commensalism.
Answers may vary. Your answer is correct as long as you clearly explain how one organism benefits and the other is unaffected.
500
Mercury can be released into the environment and affect many fish. Why are pregnant women and nursing mothers told not to eat fish?
Mercury can be passed to the baby and cause damage to the brain
500
What is the 3rd level of organization?
organ
500
What does the arrow represent in a food chain or web?