WorksheetsScience final test!
Total questions: 20
Worksheet time: 10mins
which of the following lives in a prarie ecosystem?
mushroom
grass
oak tree
woodpecker
which of the following is a biotic factor?
sunlight
bacteria
temperature
water
which of the following lists the levels of an ecosystem in order from largest to smallest?
population,organisim,community,ecosystem
ecosystem,community,organisim,population
organisim,community,population,ecosystem
ecosystem,community,population,organisim
True or false all memebrs of one community living in a particular area make up a population
True-community
False-speces
True or false oxygen is an abiotic factor in the enviorment that is important for plants to make thier own food.
True-oxygen
False-sunlight
True or false three coyotes per square kilometer is an example of population density
True
False
True or false if foxes arrive in an area and catch and eat a large number of rabbits,the foxes are causing an increase in the Birth rate of the rabbit population
True-birth rate
False-death rate
if an area has all the wolves that it can support,the wolf population has reached its what?
carrying capacity
population density
death rate
birth rate
What are the two main kinds of interactions amoung organisims are what?
competition and adaption
competition and predation
An increase in a predator population will likely result in a what in the prey population
Decrease
Increase
True or false dwarf mistletoe is a plant that grows into the bark of a tree to obtain water and nutrients the mistltoes is a parasite
true
false
an example of an adaption that helps a prey species avoid beig caught is what?
claws
sharp teeth
mimicry
posiounus stingers
a relationship in which two species live closely together and both benifit is what?
predation
mutalisim
parasitism
commensalism
What organisims are usually the pioneer species in a new area?how do these organisims prepare the are for other species
mosses and lichens are pioneer species and they break down rocks to form soil
mosses and fungi are pioneer species and they break down rocks to form soil.
an old house was torn down.small weeds and grasses grew in the vacant lot.over the next years,bushes and tree seedlings began to grow.
primary succession
secondary succession
The major cause of extinction is what
habitat fragmentation
habitat destruction
protecting whole ecosystems is the most effective way to preserve biodiversity
true
false
A sea otter is a what that influences the survival of many other species in its ecosystem
keystone species
pioneer species
what are the most diverse ecosystems in the world
tropical rainforests
coral reefs
ocean
scientists think ppl have directly caused the extinction of some species through habitat destruction,BLANK,or other actions
pollution,poaching
pollution
poaching,threating species
