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Worksheetsmodule 3.1
Total questions: 14
Worksheet time: 7mins
What are autotrophs?
Organisms that produce their own food from inorganic sources
Organisms that break down dead organic matter
Organisms that rely on external energy sources
Organisms that consume other organisms
What is biomagnification?
The process of energy transfer in a food chain
The movement of nutrients in biogeochemical cycles
The increasing concentration of toxic substances in higher trophic levels
The breakdown of organic matter by decomposers
Which of the following is a primary producer?
A rabbit
A lion
A plant
A mushroom
What do ecological pyramids represent?
The energy flow in a food web
The relationship between trophic levels in an ecosystem
The diversity of species in an ecosystem
The population size of organisms
What is the role of decomposers in an ecosystem?
To compete with primary consumers for resources
To produce energy through photosynthesis
To consume primary producers
To break down dead organic matter and recycle nutrients
What is the definition of a food web?
A linear sequence of energy transfer
A representation of energy flow in a single food chain
A complex network of interconnected food chains
A diagram showing energy loss at each trophic level
Which of the following describes kinetic energy?
Energy stored in an object's position
Energy of motion
Energy that cannot be transformed
Energy derived from chemical reactions
What is the first law of thermodynamics?
Energy can be created from matter
Energy cannot be created or destroyed, only transformed
The entropy of a closed system always decreases
Energy is always lost in transformations
What is photosynthesis?
The process by which autotrophs capture light energy and convert it into chemical energy
The breakdown of organic matter by decomposers
The synthesis of inorganic compounds
The process of energy transfer in a food chain
What is entropy?
A process of energy capture by autotrophs
A measure of disorder or randomness in a system
A type of energy transformation
A measure of energy in a system
What are heterotrophs?
Organisms that produce their own food
Organisms that rely solely on sunlight for energy
Organisms that obtain energy by consuming other organisms
Organisms that break down dead organic matter
What is potential energy?
Energy that is lost in transformations
Stored energy due to an object's position or state
Energy that is being used
Energy of motion
What is the role of primary producers in an ecosystem?
To consume other organisms
To capture energy and synthesize organic compounds
To compete with decomposers
To break down dead matter
What is a trophic level?
A feeding level within a food chain or food web
A measure of energy in a system
The diversity of species in an ecosystem
The total biomass of an ecosystem
