2.1 Species Growth

Question 1

introduced species aka

Answer 1

exotic species

Question 2

introduced species

Answer 2

species transferred by humans from native to new habitat

Question 3

introduced species is opposite of what

Answer 3

native species

Question 4

native species

Answer 4

species that occurs naturely in an area without human intervention

Question 5

why do humans bring species into diff places usually

Answer 5

for agricultural purposes

Question 6

bringing an introduced species into an environment ____ (increases/decreases) its species diversity

Answer 6

increases

Question 7

cryptogenic species

Answer 7

species which humans do not know where they originally lived bc of they lost track of how many times and where they were moved

Question 8

crypto means

Answer 8

hidden

Question 9

genic means

Answer 9

origin

Question 10

are all introduced species bad

Answer 10

no both

Question 11

example of why an introduced species could be good

Answer 11

helps with agricultre; helps give more food for other organisms or people

Question 12

example of why an introduced species could be bad

Answer 12

destroy other life already in the particular environment
decrease species richness

Question 13

competitive advantages

Answer 13

the lack of natural controls such as predators and diseases that keep organisms in check –> so like if u move a rat to a new place it will have a higher chance of living bc not a lot of things will eat it anymore

Question 14

invasive species

Answer 14

an introduced species that causes significant harm to the ecosystem by rapidly spreading and outcompeting native species, essentially disrupting the natural balance –> they decrease ecosystem function

Question 15

invasive species vs introduced species

Answer 15

all invasive species are bad; there’s a mix of bad and good introduced

Question 16

invasive species disrupt what

Answer 16

food webs and balance –> make unhealthy environment

Question 17

k selected species

Answer 17

organisms that have few children at a time and care for them and tend to be larger

Question 18

r selected species

Answer 18

organisms that have a lot of children at a time and don’t care for them and tend to be smaller

Question 19

what type of growth do r selected species have

Answer 19

exponential

Question 20

what type of growth do k selected species have

Answer 20

exponential until reach carrying capacity and then kinda js stop

Question 21

biotic potential

Answer 21

how quickly an organism can reproduce and their kids can also do that

Question 22

carrying capacity

Answer 22

the max amount of organisms an environment can support

Question 23

invasive species are usually what type

Answer 23

r selected

Question 24

survivorship curves

Answer 24

graphs that show the proportion of the population that survives for all of the ages

Question 25

cohort

Answer 25

group of individuals from the same population who are born at the same time

Question 26

different types of survivorship curves

Answer 26

type I, II, and III

Question 27

type I survivorship curves

Answer 27

organisms tend to survive beyond their young and middle-ages and die when they become elderly. These organisms usually have small numbers of offspring and provide lots of parental care to make sure those offspring survive

Question 28

type II survivorship curves

Answer 28

constant proportion of individuals dying at each age interval. and have relatively few offspring and provide them with lots of parental care

Question 29

Type III survivorship curve

Answer 29

populations that have a high death rate among the young, but a relatively low death rate for those who survive into middle and old age. These organisms usually have lots of offspring at once, but don't provide them with much parental care.

Question 30

types of growth curves

Answer 30

r and k curves

Question 31

which survivorship curves show k-selected species

Answer 31

types I and II

Question 32

which survivorship curves show r-selected species

Answer 32

type III

Question 33

K-selected species have traits that are advantageous at ____ (high/low) population densities

Answer 33

high

Question 34

K-selected species tend to have ____ (short/long) lives, thrive under _____( stable/unstable) conditions, be ____ (small/large) in size

Answer 34

long; stable;large

Question 35

K-selected species produce ___ (few/alot) offspring, reproduce ____ (once/more than once) in a lifetime, and provide ____ (no/lots) of prenatal care

Answer 35

few;more than once; lots

Question 36

r-selected species have traits that are advantageous at ____ (high/low) population densities

Answer 36

low

Question 37

r-selected species tend to have ____ (short/long) lives, thrive under _____( stable/unstable) conditions, be ____ (small/large) in size

Answer 37

short; unstable; small

Question 38

r-selected species produce ___ (few/alot) offspring, reproduce ____ (once/more than once) in a lifetime, and provide ____ (no/lots) of prenatal care

Answer 38

alot; once; no

Question 39

strategy for identifying what survivorship curve a species exhibits

Answer 39

see if at the end of a long time there is a big amount or a small amount of surviving organisms