NEW
Font size
WorksheetsMS LS2 1
Total questions: 15
Worksheet time: 15mins
What is the Nitrogen Cycle?
The Nitrogen Cycle is when the sun gives off its energy to the plants, when they make photosynthesis. When the plants are finished with this process, they release big amounts of carbon and oxygen into the animals that eat the plant. Then, animals’ respiration process, or breathing process happens. The animal releases the carbon back into the atmosphere, back to the plants, which start it all over again.
The Nitrogen Cycle is when bacteria takes nitrogen from the atmosphere and draws it into the soil, so that plants can be able to use it. Plants then change the nitrogen into amino acids and or proteins. The animals get the nitrogen from the plant that they eat, or other animals that eat the plants. When animals die, microbes take apart the dead animal and release the nitrogen back into the soil.
What is a food chain?
A hierarchical series of organisms each dependent on the next as a source of food.
A series of webs and pages of different species all in one ecosystem.
What is a food web?
A system of interlocking and interdependent food chains
A system of populations decreasing and increasing at the same time everyday of the year
What is a Decomposer?
An organism that eats all of the plants an fungi
An organism that breaks down the dead body of an animal
What does Trophic Level mean?
Each several levels in an ecosystem charted in an energy pyramid
Each several animals in an ecosystem in a food web
What is an Energy Pyramid?
A model that show how many of each species that there is in one ecosystem all over the world
A graphic model of energy cycling through trophic levels in an ecosystem
What does Biomass mean?
The minimum mass of organisms
The maximum mass of organisms
The total mass of organisms
What does Excretion mean?
The process of respiration
The process of eliminating waste matter
The process of photosynthesis
The process of chemical reactions
What is Fossil Fuel?
A natural fuel such as coal, or gas
A natural animal, not genetically made
Natural Resources
What is the role of producers in an ecosystem?
They decompose organic matter.
They produce energy through photosynthesis.
They consume other organisms for energy.
They recycle nutrients back into the soil.
Which of the following best describes a symbiotic relationship?
A relationship where one organism benefits and the other is harmed.
A relationship where both organisms benefit.
A relationship where neither organism benefits.
A relationship where one organism benefits and the other is unaffected.
What is the primary source of energy for most ecosystems?
The Moon
The Sun
The Earth's core
Chemical reactions in the atmosphere
In a food web, what is the role of a primary consumer?
To produce energy through photosynthesis.
To consume producers and provide energy to secondary consumers.
To decompose organic matter.
To recycle nutrients back into the soil.
Which of the following is an example of a biotic factor in an ecosystem?
Sunlight
Temperature
Plants
Water
What is the process by which plants release water vapor into the atmosphere?
Photosynthesis
Respiration
Transpiration
Condensation
