MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Earn 100

Write down a food chain (a) which ends with humans (b) is in the sea (c) that has five links in it.

Important Questions on Organisms and their Environment

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 20 - Organisms and their Environment>Questions>Q 20.6
Why are green plants called producers?
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 20 - Organisms and their Environment>Questions>Q 20.7
Why are there rarely more than five links in a food chain?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 20 - Organisms and their Environment>End-of-chapter questions>Q 1
Why do living organisms need carbon?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 20 - Organisms and their Environment>End-of-chapter questions>Q 1
Explain how carbon atoms become part of a plant and what happens to some of these carbon atoms when a plant respires?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 20 - Organisms and their Environment>End-of-chapter questions>Q 1
Explain the role of decomposers in the carbon cycle.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 20 - Organisms and their Environment>End-of-chapter questions>Q 2
Explain the difference between each of the following pairs, giving examples where you can: Producer, consumer.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 20 - Organisms and their Environment>End-of-chapter questions>Q 2
Explain the difference between each of the following pairs, giving examples where you can: Primary consumer and secondary consumer.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 20 - Organisms and their Environment>End-of-chapter questions>Q 2
Explain the difference between each of the following pairs, giving examples where you can: Community and population.