Physiological Ecology

Question 1

In order to conduct photosynthesis most plants must keep their
stomata open. This is called the

Answer 1

C3 photosynthetic pathway

Question 2

When soil moisture is depleted
the speed of water movement up
the plant tissue _____

Answer 2

Decreases

Question 3

The water that is lost can be made up for and_____________
productivity rates

Answer 3

C3 plants have the highest

Question 4

in drier environments it is a major issue
________ have limited/no ability to store CO2 so in order to carry out
photosynthesis they must have their stomata open

Answer 4

C3 plant

Question 5

____ plants are limited by water or CO2

Answer 5

C3

Question 6

C3 Plants are better ____ season

Answer 6

Cool

Question 7

C4 plants are better adapted to _______ climates

Answer 7

warmer/drier

Question 8

These plants can store CO2, so they do not have to keep their stomata
open in order to photosynthesize

Answer 8

C4

Question 9

In wet conditions___ plants out perform ___ plants

Answer 9

C3, C4

Question 10

But in drier areas (Kansas and Southwestern MO) ___ plants outdo
____ plants

Answer 10

C4, C3

Question 11

In extremely dry climates the ____pathway is superior

Answer 11

CAM

Question 12

Very few plants use this (cactus and pineapple)

Answer 12

CAM

Question 13

CAM plants separate the _______ and _______ reactions

Answer 13

light dependent, light independent

Question 14

Stomata only open at night CO2 stored

A) CAM
B) C3
C) C4

Answer 14

A) CAM

Question 15

If a site is dominated by __ plants, the productivity may be less than a
neighboring site that is dominated by ___ plants in dry conditions

Answer 15

C3, C4

Question 16

short-term changes in an organism that increase fitness in an
environment
does not include genetic change

Answer 16

Acclimate

Question 17

evolutionary change in a population

Answer 17

Adaptation

Question 18

is an evolutionary change (change in allele frequency) to
changes in environmental conditions

Answer 18

Adaptation

Question 19

Parent material of soil

Answer 19

he rock type from which it was formed—
and organic material

Question 20

____________ allow Faster percolation of water
if there is too much sand then water can quickly become unavailable
to plants

Answer 20

Course soils (e.g., sand)

Question 21

________ slow the percolation of water
if there is too much clay then water is trapped at the surface and
evaporates

Answer 21

Fine soils (e.g., clay)

Question 22

________ soils have had little biotic activity and are relatively
nutrient poor

Answer 22

Young (immature)

Question 23

_____soils are more nutrient rich

Answer 23

Older, mature

Question 24

_______organic matter, this is a soil/dead plant matter
area where primary decomposition occurs

Answer 24

O horizon

Question 25

_______topsoil, rich in organics decomposition occurring

Answer 25

A horizon

Question 26

______mineral soil (parent material) and leached
organics

Answer 26

B horizon

Question 27

__________undifferentiated parent material, some “dirt” but
not much in the way of organic material

Answer 27

C horizon

Question 28

Structured populations are those that
A) have relatively constant rates of mortality
B) are most sensitive to changes in survival of offspring
C) are most often found in highly productive biomesare most often found in highly productive biomes
D) have differential rates of mortality among age groups

Answer 28

D

Question 29

A species with a slow (k-selected) life-history would likely be most sensitive to changes in
A) reproduction
B) juvenile survival
C) adult survival
D) number of offspring produced

Answer 29

C

Question 30

Life tables where data are collected by following all members of a population for the duration of their lives
A) static
B) cohort
C) structured
D) stochastic

Answer 30

B

Question 31

Life tables can be used to
A)calculate the population growth rate of structured populations
B) generate a life history curve using survivorship (lx)
C) calculate life expectancy
D) all of the above

Answer 31

D

Question 32

Humans have a ____ life history

A) Type 1
B) Type 2
C) Type 3
D) Type 4

Answer 32

A