WorksheetsMatter & Energy in Ecosystems
Total questions: 20
Worksheet time: 2hrs 40mins
What of the following is an example of a biotic factor?
Sunlight
Stream
Tree
Rock
What is an example of an abiotic factor?
Cow
Acacia Tree
Sunlight
Grass
What is being produced during photosynthesis?
sugar (glucose) and oxygen
sugar (glucose) and carbon dioxide
glucose
gases
What gas is taken in during photosynthesis?
Argon
Nitrogen
Oxygen
Carbon dioxide
Where does the energy for photosynthesis come from?
carbon dioxide
oxygen
the sun
glucose
In what part of the cell does photosynthesis take place?
nucleus
chloroplast
cytoplasm
mitocondria
What part of a cell does cellular respiration take place?
nucleus
chloroplast
cytoplasm
mitochondria
In what way are photosynthesis and cellular respiration different?
Cellular respiration stores energy, while photosynthesis releases energy
Cellular respiration produces oxygen, while photosynthesis uses oxygen
Photosynthesis releases energy, while cellular respiration stores energy
Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide
How do consumers get energy?
Absorbing sunlight
breaking down dead organisms
soaking it up from the ground
feeding on other organisms
Decomposers are important to ecosystems because they...
return vital nutrients to the ecosystem
capture energy from the Sun
are producers
can be omnivores
What happens to the amount of carbon in an ecosystem as it moves through an ecosystem?
Amount of Carbon increases
Amount of Carbon decreases
Amount of Carbon stays the same
New Carbon is created when old carbon decomposes
This tortoise is eating cactus on a sunny day. Is carbon moving into the air, moving out of the air, or both?
Carbon is not moving into the air; it is only moving out of the air.
With this information, there is no way to know for sure.
Carbon is only moving into the air; it is not moving out of the air.
Carbon is moving into the air and out of the air at the same time.
Scientists are studying photosynthesis in a desert ecosystem that has plants, animals, and decomposers (which consume dead things). Which group or groups of organisms in the desert carry out photosynthesis?
plants
plants and decomposers
all organisms in the desert
animals and decomposers
Scientists are studying cellular respiration in a river ecosystem that has plants, animals, and decomposers (which consume dead things). Which group or groups of organisms in the river carry out cellular respiration?
plants
animals and decomposers
all organisms in the river
animals
Which ecological level includes all the deer living in an area?
organism
population
community
ecosystem
What will happen if a drought causes the population of grass to decrease?
The population of decomposers will decrease because there are less organisms dying.
The population of owls will not be affected because they are predators who do not eat grass.
The population of mice will decrease because there will be less food available due to the drought.
The population of grasshoppers will increase because they will find a different, better food source.
In an energy pyramid, which way does energy flow?
from the top of the pyramid to the bottom
from the bottom of the pyramid to the top
none of these
Which is an example of an autotroph?
snail
sunflower
mouse
flea
Which of the following means water leaving a plant's leaves as a gas?
Evaporation
Condensation
Precipitation
Transpiration
Which gas is most abundant in Earth's atmosphere?
Carbon dioxide
Oxygen
Nitrogen
Hydrogen
