Energy transfer (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What percentage of energy at one trophic level is typically passed on to the next level?
What percentage of energy at one trophic level is typically passed on to the next level?
About 10%
How is energy lost at each trophic level?
How is energy lost at each trophic level?
Respiration, excretion, uneaten parts
How many trophic levels do typical food chains have?
How many trophic levels do typical food chains have?
Four to five levels
Why are there fewer organisms at higher trophic levels?
Why are there fewer organisms at higher trophic levels?
Less energy available as you move up
How is energy lost during respiration?
How is energy lost during respiration?
As heat to the environment
Which trophic level has the most energy available?
Which trophic level has the most energy available?
Producers (plants)
If 5000 units available at one level and 500 transferred to next, what is the efficiency?
If 5000 units available at one level and 500 transferred to next, what is the efficiency?
10%
Why are food chains rarely more than 5 trophic levels long?
Why are food chains rarely more than 5 trophic levels long?
Not enough energy left after 4/5 stages
Why does incomplete consumption cause biomass loss?
Why does incomplete consumption cause biomass loss?
Bones, hooves, claws not consumed
Why do herbivores lose energy through faeces?
Why do herbivores lose energy through faeces?
Cannot digest all plant material eaten