Ecological Relationships
Evolution and Natural Selection
Food Webs and Limiting Factors
Heredity/Genetics
?????
100
What we call the organism the the parasite lives off of.
What is the host?
100
The name of the process when organisms with helpful traits survive and reproduce more successfully.
What is natural selection?
100
The organisms that recycle nutrients (from dead organisms) back into the soil.
What are decomposers?
100
Genes are found on these threadlike structures inside the nucleus.
What are chromosomes?
100
This organelle controls the activities of the cell and contains DNA.
What is the nucleus?
200
When both organisms benefit from the relationship.
What is mutualism?
200
A giraffe with a longer neck can reach more food than others. What is this helpful trait called?
What is an adaptation?
200
These organisms use sunlight to make food.
What are producers?
200
An organism’s physical appearance for a trait is called this.
What is phenotype?
200
This type of cell division produces two identical body cells.
What is mitosis?
300
When one organism benefits and the other is harmed.
What is parasitism?
300
True or False: Individual organisms can choose to evolve during their lifetime.
What is false?
300
What is a limiting factor that could affect a bird population in an ecosystem?
A. The amount of available nesting sites
B. The color of their feathers
C. The temperature of the ocean
D. The types of plants in the Arctic
What is the amount of available nesting sites?
300
If a trait is hidden when a dominant allele is present, it is called this type of trait.
What is recessive?
300
Which type of EM wave has the shortest wavelength and the highest energy?
What are gamma rays?
400
A lion hunting a zebra is an example of this type of relationship.
What is predation?
400
These are the remains or traces of ancient organisms found in rocks.
What are fossils?
400
This level consumer eats producers only.
What is a primary consumer?
400
If both alleles for a trait are the same, the organism is described as this.
What is homozygous?
400
As wavelength decreases on the EM spectrum, what happens to frequency and energy?
What is frequency and energy increase?
500
A bird building a nest in a tree is an example of this symbiotic relationship.
What is commensalism?
500
A population of insects becomes resistant to pesticide over many generations. What explains this change?
What is natural selection/evolution?
500
Manatees are large aquatic mammals found in Florida waters. Below are some characteristics of manatees.
- They feed on underwater plants in shallow areas.
- They prefer slow-moving rivers, canals, and springs.
- They require warm water to survive winter.
- Boat traffic can injure or displace them.
Which limiting factor would most directly reduce the manatee population?
A. Increase in winter temperaturesIncrease in winter temperatures
B. Decrease in predator populationsDecrease in predator populations
C. Reduction in shallow, slow-moving waterwaysReduction in shallow, slow-moving waterways
D. Increase in plant growth
What is reduction in shallow, slow-moving waterways?
500
A parent whose genotype is TT is crossed with a parent whose genotype is tt. What must be the genotype of thier children?
What is Tt?
500
In a freshwater lake, industrial waste causes a massive die-off of the shiner population. What is the most immediate effect on the food web? 
What is a decrease in black crappies and an increase in water fleas?