The photograph shows a locust - Edexcel - GCSE Biology - Question 5 - 2017 - Paper 1
Question 5
The photograph shows a locust.
(a) (i) Locusts feed on maize plants and locusts are eaten by lizards.
Lizards are eaten by snakes.
Complete a food chain for these o... show full transcript
Worked Solution & Example Answer:The photograph shows a locust - Edexcel - GCSE Biology - Question 5 - 2017 - Paper 1
Step 1
Complete a food chain for these organisms.
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Answer
The food chain is as follows:
maize (plants) → locusts → lizards → snakes
Step 2
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
Maize plants get energy to grow from the
D sunlight.
Step 3
Calculate how much of the maize plant biomass is passed on to the locusts.
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Answer
Given that the biomass of maize plants is 8800g and only 8% is passed to the locusts, we calculate:
State one reason why only 8% of the biomass from the maize plants is passed on to the locusts.
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Answer
One reason is that a significant part of the biomass is used by the maize plants for growth, maintenance, and reproduction, rather than being available as food for herbivores.
