Final Exam Flashcards
(33 cards)
the most ancient animals do not have a complete circulatory system. which the following is an example of such an animal, and how do they transport nutrients throughout their body?
sponges; rely on diffusion to transport nutrients
what is a closed circulatory system and which of the following animals has one
system where blood is contained within vessels; earthworm
which of the following animals have gills for respiration as adults?
clams and perch
which of the following animals have a digestive cavity with only one opening as adults
hydra and flatworm
in the rat, the front paw is blank to the shoulder
distal
in the pigeon, the blank is anterior to the heart
beak
what is the name of the opening through which water leaves the sponge
osculum
what is the structure located between the small and large intestine in the rat
cecum
what is the most accurate method for determining population size
mark and recapture
which quadrant sampling method provides a more accurate estimate of population size for a clumped distribution pattern
intervals
why cant the mark and recapture sampling method be used for plants
plants don’t move so this is not possible
what might cause actual population growth to not match theoretical population growth estimates when using exponential growth equations
stochastic events, competition for food, predation
how might introduction of white tailed deer to isle royal alter the moose pop
moose population would decrease as they have the same food source
what effect does predation typically have on the health of a prey population’s members
predation improves overall health by removing weak individuals
a good ecological model is a tradeoff between realism and simplicity. state two simplifications made on the isle royal model
all of the above
when would exponential growth equation and logistic growth equation produce similar instantaneous growth rate
when a population is very small compared to carrying capacity
which of the following scenarios would lead to an overstimulation of population
the marked squirrels are more likely to be recaptured than unmarked squirrels
what does k represent in this graph
carrying capacity
what phylum is sponge
porifera
function of choanocytes
create water flow and movement
how many tissue layer do sponges have
2
what symmetry do hydra have
radial
hydra phylum
cnidaria
gas exchange in planaria
diffusion
