Download Practice Quiz 6 - Iowa State University

Practice quiz 6:
answer
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Courtney
Bio 211
Boury
11/28/12
1) What are the different types of dispersion?
Clumped – resources in nature tend to be clustered
Uniform- due to competition
Random – resources are randomly spaced
2) Define
semelparity- produce all offspring in a single reproductive event. Reproduce once and
die. Live for many years without reproducing
iteroparity- reproduce throughout the lifecycle (seasonal or continuous)
3) Draw each survivorship curve and describe each one.
Type I
Humans
Type II
Squirrels
Type III
Oysters
4) What is not an example of an abiotic interaction?
a) Wind
b) Predation
c) Water
d) Salinity
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5) What is an example of a biotic interaction?
a) Predation
b) Symbiosis
c) competition
d) all of the above
6) What is the best definition of ecology?
a) the study of the climate effects on biomes
b) the study of the interactions among plants and animals
c) the study of interactions among organisms and their environment
d) none of the above
7) Which level or ecology looks at intraspecies interactions?
a) Organismal
b) Population
c) Community
d) Ecosystems
8) An examination of the temperature tolerances of locusts would best be described by which
ecological sub-discipline?
a) Organismal ecology
b) Population ecology
c) Community ecology
d) ecosystem ecology
9) An examination of predator prey interactions of locusts would best be described by which
ecological sub-discipline?
a) Organismal ecology
b) Population ecology
c) Community ecology
d) ecosystem ecology
10) What characteristics are commonly used to identify the biomes of the earth?
a) temperature
b) precipitation
c) vegetation
d) all of the above
e) a & b only
11) What is the predominant biome around 30/40 degrees latitude?
a) Temperate deciduous forest
b) Desert
c) Tropical rainforest
d) grassland
12) You catch 50 large mouth bass in a lake and tag all of their fins. Later you will return to the
lake and catch 40 fish. Of these 40, 5 were previously tagged. Assuming no immigration,
emigration, births, or deaths, what is the total population size of bass in the lake?
a) 40
b) 400
c) 500
d) 50
13) What is a density dependent limiting factor of a population?
a) Large populations are more successful than small populations
b) Small populations are more successful than large populations
c) Small, less dense populations are more strongly effected than Large, crowded ones.
d) Large, dense populations are more strongly affected than small, less crowded
ones.
14) What is NOT a density independent limiting factor?
a) Weather
b) Climate
c) Natural Disasters
d) Disease
15) density-dependent selection, selects for life history traits that are sensitive to population
density is also known as
a) k-selection ( Oak, large size, slow growth, long life span)
b) r-selection (dandelions, small, rapid growth, short life)
16) density-independent selection, selects for life history traits that maximize reproduction is
also known as
`
a) k-selection
b) r-selection
17) Fill in the blanks:
18) Why do giant sequoias depend on low intensity fires?
a) reproductive success (open cones and release seeds)
b) strengthens bark
c) removes needles to allow more sunlight on the forest floor
d) none of the above
19) Why does Arizona have a desert climate?
a) Rain Shadow effect
b) 30/40 degree latitude
c) 0 degree latitude
d) both a&b
20) Zone where light is sufficient to allow photosynthesis to occur is known as the
a)
b)
c)
d)
Photosynthesis zone
Photic zone
Light zone
intertidal zone
21) What factors contribute to the net reproductive rate (Ro)?
a) age specific survivorship ( proportion of alive individuals at start of year)
b) age specific fertility
c) number dying during year
d) both a&b
Ro=E lxmx
Lx=age specific survivorship
Mx=age specific fertility
22) The maximum number of individuals a certain area can sustain is know as
a) the intrinsic rate of growth
b) the resource limit
c) the carrying capacity
d) the logistic equation
23) The amount of land necessary for survival for each person in a sustainable world is known as
a) the sustainability level
b) an ecological impact
c) an ecological footprint
d) survival needs
24) If 2 species are interacting, and they are both negatively effected, what is this called?
a) competition
b) amensalim
c) predation
d) mutualism
25) If 2 species are interacting, and one is positively effected, and one is negatively effected, what is this called?
a) competition
b) amensalism
c) predation, herbivory, parasitism
d) commensalism