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SingaporeBiologyQuick questions
Ecology and Environment
Quick questions on Food chains and energy flow: N(A)-Level Biology Ecology and Environment
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are food webs?Show answer
In real life, most animals eat more than one kind of food, and most foods are eaten by more than one animal. So many food chains link together into a food web, which shows all the feeding relationships in a place. A food web gives a fuller picture than a single chain.
What is energy loss along the chain?Show answer
At each step, only some of the energy is passed on. A lot is lost:
What is q1?Show answer
State what a producer is. [1 mark]
What is q2?Show answer
State where the energy in a food chain originally comes from. [1 mark]
What is q3?Show answer
Explain why energy is lost at each step of a food chain. [2 marks]
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