lab prac 2 Flashcards
what is a mesic environment?
an environment with ample moisture
what is a xeric environment?
an environment with little moisture
does an exponential graph ever level off?
no
logistic graphs look like what?
an S
what is the equation for a lincoln-pearson equation?
(number of animals marked in the first capture X number marked in recapture)/ marked animals in recapture
what is the equation of a Schnabel test?
(number of previously marked animals X total captured)/previously marked animals captured
Phylum porifera is commonly known as?
sea sponges
a defining fact about sea sponges…
is that they are sessile
Phylum Cnidaria contains what types of animals?
they have hollow body cavities, jellyfish and anemones are cnidarians
phylum platyhelmenthes is more commonly konwn as…
flatworms
a defining feature of flatworms?
they are flat, one single digestive line
phylum nemotoda is more commonly known as…
roundworms
phylum annelida is more commonly known as…
ringed worms, or segmented worms
a common species in phylum nemotoda is what?
leeches
a common species of phylum annelida is what?
earth worms
phylum arthripoda encompases what types of animals?
crabs, spiders, bugs and crustaceans
what is unique about phylum arthropoda?
exoskeletons and jointed appendiges as well as hydrostatic skeleton
phylum mollusca encompases what kinds of animals?
octopus, squid, and snails
phylum mollusca is unique because of…
well-developed organs and limbs, as well as being triploblastic
phylum echinoderma encfompases what?
radial animals like starfish
phylum chordata is more commonly known as what?
vertibrates
what is a defining feature of chordates?
true spines, closed circulatory system, and nerve chords
what are the 5 conditions for a hardy-weinberg equillibrium?
no natural selection, no migration must be occurring, no mutation must be occurring, mating within the population must be random, the population must be large.
when doing a chi-squared equation, what is the most important result?
the P-Value
