Download Ecology and Populations Review

Ecology and Populations Review
• Identify the following relationship and explain why
• The cattle egret eats insects that have been disturbed when
the cattle forage.
•
A hermit crab taking up residence in an empty seashell.
•
Fleas and mosquitoes feed on blood from other organisms
•
Aphids eat sap from plants.
• In the ocean, certain species, like shrimps and gobies, will
clean fish. They remove parasites, dead tissue, and mucous.
• Draw a food chain that has 5 trophic levels. Label each
trophic level with the following terms: autotroph,
heterotroph, producer, primary consumer, secondary
consumer, tertiary consumer, quaternary consumer,
carnivore, herbivore.
• Take your food chain and convert it into a into a
biomass pyramid. Label the trophic levels with the
quantity of biomass as each level. Start with 632, 980
kg.
Identify the different types of
pyramids
• Draw a logistic curve and label the parts.
Include title and axis and say what is
happening at each part of the trend line.
• Does the logistic growth curve exhibit positive
or negative feedback loop? Why?
• Draw an exponential curve and label the parts
including title and axes.
• Does the exponential curve exhibit positive or
negative feedback loop? Why?
• Last year there were 1907 students at Skyline
High School. 213 students graduated. This
year there are 278 freshmen. 25 students go
to BC for running start. What is the
population of Skyline this year?
• Skyline High School is a 25,000 square foot
building. There are 2070 students who go to
the school. What is the population density?
• Skyline High school started the school year
with 2070 students. Since September, 15
students withdrew due to moving to another
district and 2 more are now homeschooled.
There has been 45 new students who have
moved into the area. What is the present
population of students at Skyline High school?
• *Note: All numbers are made up.
• Define the following terms and give examples of
each.
–
–
–
–
–
–
–
Community
Habitat
Ecosystem
Biome
Population
population dispersion
density independent and density independent limiting
factors
– Abiotic and biotic