miscellaneous vocab Flashcards
what are septae
fungi that do not have septae
divide the hyphae filaments into different compartments
coenyoctic fungi
what is the choanoflagellate
the orignal common ancestor that started the whole process of animal evolution was the choanoflagellate
what are the four main evolutionary branchpoints
choanoflagellate
parazoa eumatozoa
radiata bilareta
acoelamtea animals with cavities
coelamates pseudocolemates
protostomes deuterostomes
what are parazoa
eumatazoa
parazoa=no true tissuea
eumatozoa= true tissue
radiata
bilaterata
those that have a radial symmetry, only top and bottom or front or back.
bilateral: top and bottom (dorsal/ventral) posterior/anterior
acoeloamte
pseudocoelamate
coloem
- no bloody vascular system and lacking a cavity between gut and outer body wall: flatworm
- pseudo: not enclosed by mesoderm/roundworms
- coelmates: coelem have fluid-filled body cavity found between gut and has lining
protostomes
deuterostomes
a bilateral animal whose first embryonic indentation becomes a mouth: annelida, arthropods, and molluscs
a brand that includes chordates and echinoderms, first it develops into anus.
what is biotic potential
- the maximum growth rate of a population given unlimited resources
- unlimited space and lack of predators
- rate varies from species to species
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what is distribution
what are the types
how populations are dispersed over an area
clumped
uniform
random
generation time
time needed for individuals to reach reproductive maturity
what is population cycle
the cycle where there is a j-shaped curve leading to the formation of the s-shaped curve
k-selected population
r-selected population
oppurtunistic
- population of roughly constant size whose members of low reproductive rates, post-natal care until maturation
- populations that experience rapid growth, numerous, rapid maturation, no post-natal care.
- also known as oppurtunistic populations, grow fast, reproduce quickly, show up when space in region opens up quickly in evniornmental change
carrying capacity
defined as the maximum number of individuals that a population can sustain in a given enviornment
exponential growth
logistic growth
- the population grows at a rate that creates a j-shaped curve. the population grows as if there are no limitation as to how large the population can get.
- the population grows at a rate that creates an S-shaped curve. limiting factors are the culprits causing S-shaped curve, putting a cap on the size to how large the population can grow.
survivorship curve
type 1
type 2
type 3
show the relative survival rates for populations of different ages.
long-life until an old age
constant death rate
rapid death rate, then stability
competition
intrasepcific
interspecific
members from the same species cannot occupy the exact same niches
within species
different species
