NEW
Font size
WorksheetsEcosystems and Communities
Total questions: 15
Worksheet time: 8mins
Something that limits the size of a population.
dependent variable
control factor
the x factor
limiting factor
Deserts, mountains, and rivers are all examples of ________.
biotic factors
tundra
ecosystems
wetlands
Several species of warblers can live in the same spruce tree ONLY because they
have different habitats within the tree.
eat different foods within the tree.
occupy different niches within the tree.
can find different temperatures within the tree.
The symbiotic relationship between a flower and the insect that feeds on its nectar is an example of
mutualism because the flower provides the insect with food and the insect pollinates the flower.
parasitism because the insect lives off the nectar from the flower.
commensalism because the insect doesn't harm the flower, and the flower doesn't benefit from the relationship.
predation because the insect feeds on the flower.
What is one difference between primary and secondary succession?
Primary succession is slow, and secondary succession is rapid.
Secondary succession begins on soil, and primary succession begins on newly exposed surfaces.
Primary succession modifies the environment, and secondary succession does not.
Secondary succession begins with lichens, and primary succession begins with trees.
Which factor can influence continual change in an ecosystem?
further disturbances
long-term climate changes
introduction of nonnative species
all of the above
An example of a place with a microclimate is
a mountain range capped with ice.
a forested park in a desert city.
an orchid growing in a rain forest.
coniferous trees in a temperate forest.
Which two biomes have the least amount of precipitation?
tropical rain forest and temperate grassland
tropical savanna and tropical dry forest
tundra and desert
boreal forest and temperate woodland and shrubland
Which is NOT an adaptation that organisms have for living in flowing water?
hooks
tenatacles
streamlined body
suckers
Which of the following statements is NOT true about the oceanic zone?
The open ocean has very low levels of nutrients.
Organisms in the deep oceanic zone are exposed to frigid temperatures and total darkness.
The oceanic zone begins at the low-tide mark and extends to the end of the continental shelf.
Most of the photosynthetic activity on Earth occurs in the open ocean within the photic zone.
The chemistry of aquatic ecosystems is determined by the
amount of salts, nutrients, and oxygen dissolved in the water.
number of other organisms present in the water.
amount of rainfall the water receives.
biotic and abiotic factors in the water.
Why is there more carbon dioxide released into the atmosphere today than over the past decade?
through the burning of fossil fuels
plants are expelling carbon into the soil as they grow
rocks become richer in soil as time goes on
the carbon rich bodies of plants and animals decay into the earth after they die
