Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology 201 > Chapter 5 > Flashcards

Chapter 5 Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

What is a population

A

a group of organisms of the same species occupying a place at the same time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the three characteristics of a population

A

desity
age structure
sex ratio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a unitary population

A

Distinct individuals that develop in a determinate pathway, usually animals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a modular population

A

Lots of small units making a whole, usually plants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which kind of population is difficult to count

A

Modular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What do populations consist of

A

Individuals with certain genes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are populations a sum of (gene pool)

A

All the genetic material in a pop’n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is a metapopulation

A

A population separated spatially (local pop’n)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do metapopulations interact internally

A

Through dispersal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is density

A

Size of a pop’n per unit of space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is crude density

A

per unit area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is ecological density

A

per unit living area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What density is most commonly used

A

Crude density

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What happens to density as body size increases

A

Decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What happens to density as trophic level increases

A

Decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What affects density

A

Food supply, weather…

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How are organisms distributed

A

Spatially or temporal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What kinds of dispersal are spacial

A

Random, uniform, and clumped

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is random distribution

A

Positions of organisms are independent if others, no interaction btw organisms, rare distribution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is uniform distribution

A

Even position, territorial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is clumped distribution

A

Most common, things in groups competing for resources

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What affects distribution in animals

A

Social factors like courtship, herds, or societies

23
Q

What is temporal distribution

A

Distribution over times

24
Q

What is emigration

A

Leaving a pop’n

25
Q

What is immigration

A

Entering a pop’n

26
Q

How do plants disperse

A

Through seeds or gametes, passive process

27
Q

How do animals disperse

A

Active process, migrate annually or move for more resources

28
Q

What is an example of an unusual migration

A

Monarch butterflies

29
Q

What does distribution of age in a population represent

A

The reproductive rates, death rates, and survival rates

30
Q

What is a sex ratio

A

Proportion of males to females

31
Q

What sex is slightly more likely for birth in mammals

A

Males

32
Q

What sex lives longer in mammals

A

Females

33
Q

What is a male behaviour

A

Competing for mates (expensive)

34
Q

What is a female behaviour

A

Laying eggs (vulnerable)

35
Q

What is the equation for survival probability

A

1-probability of dying

36
Q

What is physiological natality

A

Maximum possible number of births

37
Q

What is a cohort

A

Group of organisms born at the same time

38
Q

In a life table, what is Nx

A

of individuals at age x

39
Q

In a life table, what is lx

A

Proportion surviving to x

40
Q

In a life table, what is dx

A

that die between x and x+1

41
Q

In a life table, what is qx

A

Probability of dying at age x

42
Q

What is the equation for qx

A

(# dying during x)(# alive at start of x)

43
Q

In a life table, what is Lx

A

Average # alive during age interval x to x+1

44
Q

In a life table, what is Tx

A

Total years lived by all (sum of all Lx)

45
Q

In a life table, what is ex

A

Mean life expectancy

46
Q

In a life table, what is mx

A

Mean number of females born in each age group x

47
Q

In a life table, what is mxlx

A

number of offspring produced per unit time

48
Q

In a life table, what is the sum of lxmx

A

number of females that a newborn female will leave over her lifetime

49
Q

What is a type 1 survivorship curve

A

convex, high survival, die at old age

50
Q

What is a type 2 survivorship curve

A

Straight, constant mortality (birds)

51
Q

What is a type 3 survivorship curve

A

Concave, High mortality early in life, insects

52
Q

What is equivalent to birth in plants

A

germination

53
Q

What is r

A

births - deaths

54
Q

What is k

A

Carrying capacity

Biology 201 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions