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Energy Flow MCQs
Energy Flow MCQs (multiple-choice questions) here to explores topics such as food chains, food webs, energy pyramids, and ecological efficiency.
These MCQs will help you if you are studying for any upcoming quiz or exam or just want to deepen your understanding of ecology.
Let’s start with MCQs below and expand your knowledge of ecological principles!
MCQ on Energy Flow
Energy can’t be created or destroyed. This statement represents a fundamental law of the universe called the _ Law of Thermodynamics
Second
Third
fourth
First
First
Energy can’t be created or destroyed. This statement represents a fundamental law of the universe called the first Law of _
Thermodynamics
Fluid mechanics
optics
paleontology
Thermodynamics
Energy principles include _
When energy is transferred in living systems, some of the energy is transformed into heat energy
When energy is changed from one form to another, it’s transformed.
When energy is moved from one place to another, it’s transferred
Energy can’t be created or destroyed
All of these
All of these
Energy flow refers to the transfer and transformation of energy through ecosystems, from one organism to another and between different trophic levels. It sustains life processes, drives biological activities, and influences ecosystem dynamics.
When plants do photosynthesis, they absorb light energy from the Sun and convert it into the _ energy stored in carbohydrates
chemical
Heat
Light
sound
chemical
during photosynthesis, light energy is transformed into _ energy
Heat
chemical
Electric
sound
chemical
When energy is transferred in living systems, some of the energy is transformed into heat energy. Its called _ Law of thermodynamics
Second
Third
fourth
First
Second
When energy is transferred in living systems, some of the energy is transformed into heat energy. Its called second Law of _
Fluid mechanics
optics
Thermodynamics
paleontology
Thermodynamics
all chemical reactions spontaneously occur in the direction that increases disorder in the universe. Its called?
Enthalpy
entropy
Internal energy
None of these
entropy
Scientists use a _ to illustrate the flow of energy from one trophic level to the next
Energy circle
Food cuboid
energy pyramid
Food triangle
energy pyramid
Energy pyramids show the amount of energy at each trophic level in proportion to the next trophic level — what ecologists refer to as _
ecological efficiency
Energy circle
Food cuboid
Food triangle
ecological efficiency
To estimate ecological efficiency, ecologists use a rule of thumb called the _ rule
50-percent
10-percent
Energy pyramid
None of these
10-percent
About _ percent of the energy that was originally stored in producers is transferred to primary consumers when they eat the producers
20
56
10
69
10
Each level of consumer receives about _ percent of the energy originally captured by the organism it consumed in energy pyramid
20
56
10
69
10
