Ecosystems
Which of the following describes a relationship in which one organism depends on
another for its needs?
A. A rabbit burrowing in the ground
B. A hawk catching and eating a mouse
C. A frog cooling off in a pond
D. An oak tree absorbing sunlight for food
B. A hawk catching and eating a mouse
Plants and animals put solids, liquids and gases into the environment by -
A. absorbing nutrients.
B. producing offspring.
C. consuming food.
D. releasing waste.
D. releasing waste.
In which sphere would you find an iceberg?
A. Biosphere
B. Hydrosphere
C. Geosphere
D. Atmosphere
B. Hydrosphere
Plants get the food they use for energy and growth by-
A. making it from sunlight.
B. absorbing it from other living things.
C. eating small insects.
D. breaking down bacteria.
A. making it from sunlight.
In which sphere would you find a shark?
A. Geosphere
B. Hydrosphere
C. Atmosphere
D. Biosphere
D. Biosphere
Liquid water is moved from living things to the environment when animals -
A. Eat
B. Urinate
C. Sleep
D. Breathe
B. Urinate
What is not a basic need for an organism?
A. Water
B. Shelter
C. Food
D. Mate
D. Mate
Animals get the energy they need for growth and repair from-
A. the action of muscles.
B. protective coloration.
C. the food they eat.
D. avoiding predators.
C. the food they eat.
Which of the following would be the most likely to cause the rapid disruption of an
ecosystem?
A. The introduction of a new species
B. A gradual change in temperature
C. Varying rainfall from season to season
D. One kind of organism preying on another
A. The introduction of a new species
Which of the following best describes the role of decomposers in the cycling of matter?
A. Returning nutrients from dead plants and animals to the soil
B. Releasing oxygen gas into the atmosphere for animals to breathe
C. Using energy from the Sun to produce food for plants and animals
D. Providing a source of food for plants and animals to eat
A. Returning nutrients from dead plants and animals to the soil
The main requirement for a diverse ecosystem is that -
A. new species, which compete with existing species, are continually introduced.
B. there are enough resources available to support many different types of organisms.
C. the number of animal species is greater than the number of plant species.
D. none of the organisms present are consuming other organisms to meet their
needs.
B. there are enough resources available to support many different types of organisms.
The idea that plants do not need soil to grow is supported by which of the following observations?
A. Plants remain green for several hours after being removed from the soil.
B. Different types of plants grow better in different types of soil.
C. Some plants are grown in containers with nothing but water.
D. When plants die, some of their nutrients are returned to the soil.
C. Some plants are grown in containers with nothing but water.
What would happen if a new species is introduced into an ecosystem?
A. It would become unbalanced
B. It would be more balanced
C. Nothing
D. Organisms would get a new friend
A. It would become unbalanced
Matter moves directly from plants to animals when plants are eaten by animals.
Matter also moves from plants to animals through -
A. Sunlight
B. Heat
C. Adaptations
D. Air
D. Air
Where does energy come from?
A. Plants
B. Water
C. Sun
D. Animals
C. Sun
Under which of the following conditions would a plant grow the best? A plant grown with -
A. Water, soil, but no air
B. Water, air, but no soil
C. Soil, air, but no water
D. Soil, but no air or water
B. Water, air, but no soil
Which environmental change would be harmful to the survival of a robin?
A. Prairie dogs digging tunnels in the ground
B. Beavers building a dam to create a pond
C. Humans clearing forests to build houses
D. Ants building large anthills in a schoolyard
C. Humans clearing forests to build houses
How does the decomposition of a fallen tree contribute to the health of a forest?
A. The smell of decayed matter repels insects and small animals.
B. As the tree decays, nutrients cycle to other organisms.
C. A large, fallen tree can shelter green plants from the sunlight.
D. A fallen tree prevents weathering of rock from occurring.
B. As the tree decays, nutrients cycle to other organisms.
What is this called:
Sun ---> Plant ---> Rabbit ---> Wolf
A. Ecosystem
B. Food Chain
C. Food Web
D. Biosphere
B. Food Chain
Which of the following would provide the best evidence that plants require water for growth?
A. Watering two plants on alternate days over a period of one year and measuring the growth of both plants
B. Comparing data on the growth rates of plants in habitats that receive lots of rain and plants in drier habitats
C. Growing 100 plants under identical conditions, but providing water to only 50 of the plants, then measuring the growth of all the plants
D. Timing how fast different seeds are able to grow in soil and how fast seeds are able to grow in water from several different sources.
C. Growing 100 plants under identical conditions, but providing water to only 50 of the plants, then measuring the growth of all the plants