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ecology review gaome
Terms in this set (46)
group of organisms that reproduce and produce fertile offspring
a group of individuals that belong to the same species and live in the same area
different populations that live together in a certain area
a human eats a frog that has eaten a cricket that fed on a plant name each tropic level:
3rd level consumer, 2nd level consumer, 1st level consumer, producer
an organism that uses energy to produce its own food
the total amount of living tissue within a given trophic level
what does each eat?
Plants, Animals, Plants and animals, dead remains
three methods used by ecologists to study the living world
model, experiment, observe
a __ is made up of interconnected feeding relationships in an ecosystem
several species of birds live in the same tree:
do they have different or same habitats
they occupy different or same niches
a symbiotic relationship in which both organisms benefit
a symbiotic relationship in which one organism benefits and the other is indifferent
a symbiotic relationship in which one organism lives off and harms the other
type of succession that begins on soil
type of succession that begins on newly exposed surfaces
secondary succession, primary sucession
Abiotic or biotic factor
biotic, abiotic, abiotic, abiotic
there are 300 Maple trees per square kilometer in a certain area of a forest. This is an example of:
Will the population grow?
The death rate becomes lower than the birthrate
the death rate increases and the birthrate stays the same
the death rate becomes higher than the birthrate
the death rate and birthrate stay the same
yes, no, no, no
When individuals in a population reproduce at a constant rate, it produces a growth pattern called __
As resources in a population become less available, the population growth reaches carrying capacity
Would these be a limiting factor on a whale population?
yes, no, yes, yes
If a population grows larger than the carrying capacity of the environment, the death rate will __
any factor in the environment that causes population growth to decrease is a __ factor
the largest number of individuals that an environment can support
density-dependent or density-independent factor?
Dependent, Independent, Dependent, Dependent
What organism is found by the hydrothermal vents carrying out chemosyntheis
Parasites can be considered to be predators because they take nourishment at the expense of another
The study of interactions among organisms and between organisms and their environment
the Asian carp and zebra mussels (invasive species) are reproducing out of control because:
they have no predators since they were brought into an area
Concentration of toxins increases at each trophic level because of
the movement of individuals out of a population
large or small canines?
Travels slowly or quickly?
Large or small size?
large, excellent, quickly, large
the parasitic wasp used the __ as its host
in most food chains, the source of energy is the __
__ are produced in a cross between two similar species. Examples are the liger and the zorse
what % of the energy in a trophic level is available to organisms at the next level?
Ecosystems are constantly changing in response to natural and human disturbances
a climax community is a permanent community
with competition, there is a winner and a loser
plant and animal remains
where an organism lives
an organisms occupation
first organisms to populate an area when primary succession begins
each step in a food chain
a biologist caught and marked 5 rabbits. In a two-week period, he caught 40 rabbits. Of those 40, 15 were marked. What is the estimated population
(40x5)/ 15= 13.3
If a biologist collected 50 paramecium in two gallons of water, he could estimate that there would be __ paramecium in 100 gallons of water
an autotroph is called a __
a heterotroph is called a __
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