Intruders in an ecosystem — Question Bank (Cambridge) — Cambridge IGCSE Physics 0625 Revision Notes & Topical Questions

Cambridge Lower Secondary Stage 8

Question 1
Paper Ref: 0610/21_Summer_2019_Q37

Which term describes a group of organisms of one species, living in the same area, at the same
time?
A community
B ecosystem
C genus
D
population

Options:
A
B
C
D
Correct Key: D

Question 2
Paper Ref: 0610/11_Summer_2026_Q39

What is a definition of biodiversity?
A agroup of organisms of one species living in the same area at the same time
B all of the populations of different species in an ecosystem
C the community of organisms and the environment interacting together
D the number of different species that live in an area

Options:
A
B
C
D
Correct Key: D

Question 3
Paper Ref: 0610/12_Spring_2024_Q37

What is a correct ecological definition?
A Acommunity is a group of organisms of one species living in the same area.
An ecosystem is a community of organisms and their environment interacting together.
A population is a group of different species living together.
oO Oo WW
A species is all of the different organisms living in a community.

Options:
A
B
C
D
Correct Key: B

Question 4
Paper Ref: 0610/21_Summer_2025_Q38

Which term describes the number of different species living in an area?
A _ biodiversity
B-conservation
C ecosystem
D
population

Options:
A
B
C
D
Correct Key: A

Question 5
Paper Ref: 0610/23_Winter_2023_Q38

Which word describes the number of different species in an area?
0 OO WW
biodiversity
community
ecosystem
population

Options:
A
B
C
D
Correct Key: A

Question 6
Paper Ref: 0610/13_Summer_2021_Q40

What happens when deforestation takes place?
A
B
Cc
D
The number of habitats is increased.
The number of species becoming extinct is increased.
The possibility of flooding is decreased.
The volume of soil present is increased.

Options:
A
B
C
D
Correct Key: B

Question 7
Paper Ref: 0610/21_Winter_2017_Q36

What is shown by the widest block in a pyramid of numbers for a grassland ecosystem?
A all the consumers in the pyramid
B the carnivores in the pyramid
C_ the organisms at the top of the pyramid
D
the producers in the pyramid

Options:
A
B
C
D
Correct Key: D

Question 8
Paper Ref: 0610/22_Winter_2021_Q39

What are reasons why species become endangered?
A
B
Cc
D
habitat destruction, hunting and introduced species
habitat protection, introduced species and monitoring
habitat destruction, hunting and captive breeding programmes
hunting, pollution and seed banks

Options:
A
B
C
D
Correct Key: A

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