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Ecology (MS BIO) Flashcards | StudBud
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Ecology (MS BIO)
Ecology (MS BIO)
20 terms
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A biology quiz on the basics of #ecology.
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
Which of the following could describe a population that is decreasing in size?
death rate is constant and the birthrate is increasing
death rate is becoming higher than the birthrate
birthrate and death rate remain the same
death rate is becoming lower than birthrate
2
Model of the feeding interactions among organisms in a community from producers to decomposers
ecosystem
food web
food chain
population
3
Branch of biology dealing w/ interactions among & between organisms & their environment
economy
ecology
modeling
recycling
4
Energy that is not used in an organism's life processes is
stored as fat
stored as body tissue
eliminated as heat
used in reproduction
5
the pattern of spacing between individuals across the range of a population is its
growth rate
habitat
density
distribution
6
A symbiotic relationship in which one organism is harmed and the other benefits is
mutualism
commensalism
parasitism
predation
7
An organism's niche is
a full description of the place an organism lives
conditions in which an organism lives and its interactions
all the physical and biological factors in the environment
ranges of temperatures that the organism needs to survive
8
A bird stalks, kills, and then eats an insect. Which pair of terms describes the bird?
herbivore, decomposer
autotroph, herbivore
carnivore, consumer
producer, heterotroph
9
A wolf pack hunts, kills, and feeds on a moose. The wolves are
predators
mutualists
hosts
prey
10
How do most primary producers make their own food?
by using chemical energy to make sugars
by using light energy to make sugars
by changing water into carbon dioxide
by breaking down remains to make carbon dioxide
11
Animals get most of the nitrogen they need
by consuming plants or other animals
from the process of denitrification
by breathing in atmospheric nitrogen
directly from bacteria in the soil
12
Polar bears live in the arctic. The arctic is their
habitat
microclimate
niche
tolerance
13
Nitrogen fixation is carried out primarily by
humans
bacteria
plants
consumers
14
A symbiotic relationship in which both species benefit
mutualism
parasitism
predation
commensalism
15
Which of the following is NOT one of the factors that play a role in population growth rate?
demography
emigration
immigration
death rate
16
Which of the following is a density-independent limiting factor?
parasitism
disease
earthquake
emigration
17
Something that controls the growth or size of a population is
a limiting factor
the carrying capacity
a growth factor
the growth rate
18
The lowest level of environmental complexity that includes living and nonliving factors is the
ecosystem
community
biome
biosphere
19
The simplest grouping of more than one kind of organism in the biosphere is
a species
an ecosystem
a community
a population
20
Algae → Zooplankton → Small fishes → Squid →Shark In this food chain, what is the algae?
primary producer
primary consumer
decomposer
heterotroph
