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Worksheetshow ecosystems work
Total questions: 15
Worksheet time: 8mins
what is the process in which energy from the sun enters a ecosystem when plants use sunlight to make sugar molecules
the carbon cycle
energy flow
photosynthesis
none of the above
photosynthesis is the process by which plants, algae, and some bacteria use.....
sunlight, carbon dioxide, and water
energy, sugar, and dirt
water, energy, and dirt
carbon, dirt, and sunlight
plants that make their own food are called...
consumers
producers
what is a producer?
an organism that eats other organisms or organic matter instead of producing its own nutrients or obtaining nutrients from inorganic sources.
an organism that can make organic molecules from inorganic molecules.
none of the above
what is a tropic level?
one of the steps in a food chain or food pyramid; examples include producers and primary, secondary, and tertiary consumers.
the process by which cells produce energy from carbohydrates; atmospheric oxygen combines with glucose to form water and carbon dioxide.
none of the above
what is a food chain?
i dont know
Each time energy is transferred, some of the energy is lost as heat.
is a sequence in which energy is transferred from one organism to the next as each organism eats another organism.
what is the carbon cycle?
the movement of carbon from the nonliving environment into living things and back
the erosion of rocks
the process of plant growth
none of the above
what is phosphorus?
Na
an element that is part of many molecules that make up the cells of living organisms.
Cl
not listed
what is the phosphorus cycle?
is the cyclic movement of phosphorus in different chemical forms from the environment to organisms and then back to the environment.
i dont know
is the movement of carbon from the nonliving environment into living things and back
none of the above
When fuel is burned, large amounts of________ is release into the atmosphere.
carbon dioxide
nitric oxide
hydrogen peroxide
none of the above
_________ is an element that is part of many molecules that make up the cells of living organisms.
oxygen
nitrogen
phosphorus
carbon
The___________ is the cyclic movement of phosphorus in different chemical forms from the environment to organisms and then back to the environment.
nitrogen cycle
phosphorus cyle
carbon cycle
cellular respiration
true or false:
The pyramid becomes smaller toward the top, where less energy is available.
true
false
true or false:
6CO2+6H2O+solar engery --> C6H12O6+6O2
false
true
A __________ is an organism that can make organic molecules from inorganic molecules.
consumer
producer
flower
tree
