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Topical›Sciences - Co-ordinated (Double) 0654›Organisms and their environment›Energy flow›Paper 1

Energy flow — Paper 1 · IGCSE Sciences - Co-ordinated (Double) 0654

B18.1· 30 questions · 30 marks · 36 min · 2005–2023· Multiple choice

Every Cambridge IGCSE Sciences - Co-ordinated (Double) Paper 1 question on energy flow, laid out as 5 A4 pages with the mark scheme below. Nothing is left out. Free to read, no account.

QuestionsMark scheme
Different topic or paper

Questions5 pages

Question 1: What is an ecosystem? A a community and its habitat B a group of organisms and their predators C all organisms in a food chain D where an o…Question 2: What is released by decomposers from decaying organic matter? A carbohydrates B inorganic ions C oxygen D proteinQuestion 3: What, together with the habitat in which it lives, forms an ecosystem? A a class B a community C a population D a speciesQuestion 4: Which process is responsible for the flow of energy along a food chain? A feeding B pollination C respiration D seed dispersalQuestion 5: The diagram shows a food chain. The arrows show the flow of energy between organisms. W X Y Z Sun plants fish 1 fish 2 humans Where will en…Question 6: The diagram shows a food chain. Sunlight 1 2 3 P Q R S energy Where do energy losses occur? A 1 only B 1 and 2 only C 2 and 3 only D 1, 2 a…1 / 5
Question 7: The diagram shows a food chain. Sunlight 1 2 3 P Q R S energy Where do energy losses occur? A 1 only B 1 and 2 only C 2 and 3 only D 1, 2 a…Question 8: What is an ecosystem? A a community and its habitat B a group of organisms and their predators C all the organisms in a food chain D where …Question 9: What is an ecosystem? A a community and its habitat B a group of organisms and their predators C all the organisms in a food chain D where …Question 10: What is an ecosystem? A a community and its habitat B a group of organisms and their predators C all the organisms in a food chain D where …Question 11: Why is energy lost along a food chain? A All plants and animals respire. B Decomposers are at one end of a food chain. C Energy enters a fo…Question 12: Why is energy lost along a food chain? A All plants and animals respire. B Decomposers are at one end of a food chain. C Energy enters a fo…2 / 5
Question 13: Why is energy lost along a food chain? A All plants and animals respire. B Decomposers are at one end of a food chain. C Energy enters a fo…Question 14: In an ecosystem, how do producers get most of their energy? A absorbing sunlight B eating other organisms C feeding on dead matter D using …Question 15: In an ecosystem, how do producers get most of their energy? A absorbing sunlight B eating other organisms C feeding on dead matter D using …Question 16: Which process is responsible for the flow of energy along a food chain? A excretion B feeding C respiration D seed dispersalQuestion 17: Which process is responsible for the flow of energy along a food chain? A excretion B feeding C respiration D seed dispersalQuestion 18: Which process is responsible for the flow of energy along a food chain? A excretion B feeding C respiration D seed dispersal3 / 5
Question 19: Which chemical supplies carnivores with energy and plays a part in the carbon cycle? A carbon dioxide B fibre (roughage) C glucose D waterQuestion 20: The diagram shows a food chain. Which organisms pass the greatest amount of energy along the food chain? A B C D shrubs insects birds mamma…Question 21: The diagram shows a food chain. Which organisms pass the greatest amount of energy along the food chain? A B C D shrubs insects birds mamma…Question 22: The diagram shows a food chain. Which organisms pass the greatest amount of energy along the food chain? A B C D shrubs insects birds mamma…Question 23: In a food chain, what do all living organisms get from their food? A a supply of water B oxygen for respiration C protection from disease D…Question 24: How do herbivores get their energy? A by eating animals and plants B by eating animals only C by eating plants only D directly from sunlightQuestion 25: How do herbivores get their energy? A by eating animals and plants B by eating animals only C by eating plants only D directly from sunlight4 / 5
Question 26: Which statement about how organisms get their energy is not correct? organism source of energy A carnivores animals B decomposers dead plan…Question 27: What is the principal source of energy input into a biological system? A consumer B decomposer C producer D SunQuestion 28: Where does the principle source of energy for an ecosystem come from? A decay B the soil C the Sun D waterQuestion 29: A producer is an organism which makes its own organic nutrients. Which process does a producer use and what is the source of energy? proces…Question 30: In a food chain, what do all living organisms get from their food? A a supply of water B oxygen for respiration C protection from disease D…5 / 5

Mark scheme30 answers

Answers below. Sit the paper first if you are practising.

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Sciences - Co-ordinated (Double) 0654 · Energy flow — Paper 1

IGCSE · topical answer key — answer key (teacher use)

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1A10654/11 May/June 2005
2B10654/11 May/June 2007
3B10654/11 May/June 2008
4A10654/11 Oct/Nov 2008
5D10654/11 Oct/Nov 2009
6D10654/11 May/June 2010
7D10654/12 May/June 2010
8A10654/11 May/June 2011
9A10654/12 May/June 2011
10A10654/13 May/June 2011
11A10654/11 Oct/Nov 2011
12A10654/12 Oct/Nov 2011
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14A10654/11 Oct/Nov 2014
15A10654/12 Oct/Nov 2014
16B10654/11 May/June 2015
17B10654/12 May/June 2015
18B10654/13 May/June 2015
19C10654/12 Oct/Nov 2015
20A10654/11 Oct/Nov 2016
21A10654/12 Oct/Nov 2016
22A10654/13 Oct/Nov 2016
23D10654/11 May/June 2019
24C10654/12 May/June 2019
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26C10654/12 Oct/Nov 2019
27D10654/13 Oct/Nov 2019
28C10654/13 May/June 2020
29C10654/13 Oct/Nov 2021
30D10654/11 Oct/Nov 2023

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Questions as text

Q1 · What is an ecosystem? 0654/11 May/June 2005

13 What is an ecosystem? A a community and its habitat B a group of organisms and their predators C all organisms in a food chain D where an organism lives and breeds

1 marks

Answer: A

This question in 0654/11 May/June 2005

Q2 · What is released by decomposers from decaying organic matter? 0654/11 May/June 2007

13 What is released by decomposers from decaying organic matter? A carbohydrates B inorganic ions C oxygen D protein

1 marks

Answer: B

This question in 0654/11 May/June 2007

Q3 · What, together with the habitat in which it lives, forms an ecosystem? 0654/11 May/June 2008

12 What, together with the habitat in which it lives, forms an ecosystem? A a class B a community C a population D a species

1 marks

Answer: B

This question in 0654/11 May/June 2008

Q4 · Which process is responsible for the flow of energy along a food chain? 0654/11 Oct/Nov 2008

13 Which process is responsible for the flow of energy along a food chain? A feeding B pollination C respiration D seed dispersal

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2008

Q5 · The diagram shows a food chain 0654/11 Oct/Nov 2009

12 The diagram shows a food chain. The arrows show the flow of energy between organisms. W X Y Z Sun plants fish 1 fish 2 humans Where will energy loss occur? A from W only B from W, X and Y only C from X, Y and Z only D from W, X, Y and Z

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2009

Q6 · The diagram shows a food chain 0654/11 May/June 2010

12 The diagram shows a food chain. Sunlight 1 2 3 P Q R S energy Where do energy losses occur? A 1 only B 1 and 2 only C 2 and 3 only D 1, 2 and 3

1 marks

Answer: D

This question in 0654/11 May/June 2010

Q7 · The diagram shows a food chain 0654/12 May/June 2010

13 The diagram shows a food chain. Sunlight 1 2 3 P Q R S energy Where do energy losses occur? A 1 only B 1 and 2 only C 2 and 3 only D 1, 2 and 3

1 marks

Answer: D

This question in 0654/12 May/June 2010

Q8 · What is an ecosystem? 0654/11 May/June 2011

12 What is an ecosystem? A a community and its habitat B a group of organisms and their predators C all the organisms in a food chain D where an organism lives

1 marks

Answer: A

This question in 0654/11 May/June 2011

Q9 · What is an ecosystem? 0654/12 May/June 2011

9 What is an ecosystem? A a community and its habitat B a group of organisms and their predators C all the organisms in a food chain D where an organism lives

1 marks

Answer: A

This question in 0654/12 May/June 2011

Q10 · What is an ecosystem? 0654/13 May/June 2011

9 What is an ecosystem? A a community and its habitat B a group of organisms and their predators C all the organisms in a food chain D where an organism lives

1 marks

Answer: A

This question in 0654/13 May/June 2011

Q11 · Why is energy lost along a food chain? 0654/11 Oct/Nov 2011

12 Why is energy lost along a food chain? A All plants and animals respire. B Decomposers are at one end of a food chain. C Energy enters a food chain only through plants. D Not all animals feed on plants.

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2011

Q12 · Why is energy lost along a food chain? 0654/12 Oct/Nov 2011

13 Why is energy lost along a food chain? A All plants and animals respire. B Decomposers are at one end of a food chain. C Energy enters a food chain only through plants. D Not all animals feed on plants.

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2011

Q13 · Why is energy lost along a food chain? 0654/13 Oct/Nov 2011

11 Why is energy lost along a food chain? A All plants and animals respire. B Decomposers are at one end of a food chain. C Energy enters a food chain only through plants. D Not all animals feed on plants.

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2011

Q14 · In an ecosystem, how do producers get most of their energy? 0654/11 Oct/Nov 2014

13 In an ecosystem, how do producers get most of their energy? A absorbing sunlight B eating other organisms C feeding on dead matter D using nutrients recycled by decay

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2014

Q15 · In an ecosystem, how do producers get most of their energy? 0654/12 Oct/Nov 2014

13 In an ecosystem, how do producers get most of their energy? A absorbing sunlight B eating other organisms C feeding on dead matter D using nutrients recycled by decay

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2014

Q16 · Which process is responsible for the flow of energy along a food chain? 0654/11 May/June 2015

11 Which process is responsible for the flow of energy along a food chain? A excretion B feeding C respiration D seed dispersal

1 marks

Answer: B

This question in 0654/11 May/June 2015

Q17 · Which process is responsible for the flow of energy along a food chain? 0654/12 May/June 2015

11 Which process is responsible for the flow of energy along a food chain? A excretion B feeding C respiration D seed dispersal

1 marks

Answer: B

This question in 0654/12 May/June 2015

Q18 · Which process is responsible for the flow of energy along a food chain? 0654/13 May/June 2015

12 Which process is responsible for the flow of energy along a food chain? A excretion B feeding C respiration D seed dispersal

1 marks

Answer: B

This question in 0654/13 May/June 2015

Q19 · Which chemical supplies carnivores with energy and plays a part in the carbon cycle? 0654/12 Oct/Nov 2015

12 Which chemical supplies carnivores with energy and plays a part in the carbon cycle? A carbon dioxide B fibre (roughage) C glucose D water

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2015

Q20 · The diagram shows a food chain 0654/11 Oct/Nov 2016

12 The diagram shows a food chain. Which organisms pass the greatest amount of energy along the food chain? A B C D shrubs insects birds mammals

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2016

Q21 · The diagram shows a food chain 0654/12 Oct/Nov 2016

12 The diagram shows a food chain. Which organisms pass the greatest amount of energy along the food chain? A B C D shrubs insects birds mammals

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2016

Q22 · The diagram shows a food chain 0654/13 Oct/Nov 2016

12 The diagram shows a food chain. Which organisms pass the greatest amount of energy along the food chain? A B C D shrubs insects birds mammals

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2016

Q23 · In a food chain, what do all living organisms get from their food? 0654/11 May/June 2019

12 In a food chain, what do all living organisms get from their food? A a supply of water B oxygen for respiration C protection from disease D the energy they need

1 marks

Answer: D

This question in 0654/11 May/June 2019

Q24 · How do herbivores get their energy? 0654/12 May/June 2019

12 How do herbivores get their energy? A by eating animals and plants B by eating animals only C by eating plants only D directly from sunlight

1 marks

Answer: C

This question in 0654/12 May/June 2019

Q25 · How do herbivores get their energy? 0654/13 May/June 2019

12 How do herbivores get their energy? A by eating animals and plants B by eating animals only C by eating plants only D directly from sunlight

1 marks

Answer: C

This question in 0654/13 May/June 2019

Q26 · Which statement about how organisms get their energy is not correct? 0654/12 Oct/Nov 2019

12 Which statement about how organisms get their energy is not correct? organism source of energy A carnivores animals B decomposers dead plants C green plants minerals D herbivores plants

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2019

Q27 · What is the principal source of energy input into a biological system? 0654/13 Oct/Nov 2019

12 What is the principal source of energy input into a biological system? A consumer B decomposer C producer D Sun

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2019

Q28 · Where does the principle source of energy for an ecosystem come from? 0654/13 May/June 2020

12 Where does the principle source of energy for an ecosystem come from? A decay B the soil C the Sun D water

1 marks

Answer: C

This question in 0654/13 May/June 2020

Q29 · A producer is an organism which makes its own organic nutrients 0654/13 Oct/Nov 2021

12 A producer is an organism which makes its own organic nutrients. Which process does a producer use and what is the source of energy? process source of energy A photosynthesis dead organic matter B respiration sunlight C photosynthesis sunlight D respiration dead organic matter

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2021

Q30 · In a food chain, what do all living organisms get from their food? 0654/11 Oct/Nov 2023

12 In a food chain, what do all living organisms get from their food? A a supply of water B oxygen for respiration C protection from disease D the energy they need

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2023