Unit 8 Flashcards
What are the two types of ways to regulate body tempature?
Endotherm: maintains body heat through metabolism
Ectotherm: maintains body heat through behavior
What are autotrophs?
Organisms which capture energy from physical or chemical sources.
What are the two types of autotrophs?
Photosynthetic and Chemosynthetic
What are heterotrophs?
Organisms that capture energy that has been produced by other organisms
How will changes in energy resources, and producer levels affect an ecosystem?
It will affect the # and size of the trophic levels.
Why do animals communicate?
It allows for behavioral changes which allows for different reproductive success
What are the types of organism communication?
Visual, auditory, chemical, tactile
What are the different functions of organism communication?
To indicate dominance, foraging, to establish territory, and to ensure reproductive success
What are altruistic behaviors?
Behaviors that lower one’s fitness, but increase the fitness of the group
What is intersexual selection?
Organisms make a choice of who to mate with (female v male)
What is intrasexual selection?
Reproductive behaviors to indicate dominance in order to compete for access to mates
What are the population growth types?
Exponential and logistic
What are density dependent factors?
Factors that intensify as the population increases
How do you calculate the amount of biodiversity?
Using Simpson diversity index to
What are keystone species?
An organism which is extremely important to the overall ecosystem health
