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Biology for IGCSE & O level - Human Influences On Ecosystems (Section 4)

1
What is the impact of the greenhouse effect?
Answer
(C)
It increases the temperature on earth
2
What is the main goal of sustainable fishing practices?
Answer
(C)
To maintain healthy fish populations for future generations.
3
What is the role of seed banks in conservation?
Answer
(A)
They preserve seeds of endangered species for future use.
4
In the context of the text, what is the main goal of reintroduction programs?
Answer
(D)
To return species to their native environment.
5
What is the consequence of inbreeding in small populations?
Answer
(C)
Reduced fitness and increased vulnerability.
6
What is the main aim of sustainable resource management?
Answer
(B)
To ensure resources are available for future use.
7
What does 'sustainable' mean in the context of resource management?
Answer
(B)
Using resources in a way that does not deplete them.
8
What are the ways to protect biodiversity?
Answer
A
B
9
What is the definition of an 'endangered species'?
Answer
(B)
A species that is in immediate danger of extinction.
10
What technique is used in captive breeding for assisted reproduction?
Answer
(B)
Artificial insemination.
11
What is a potential solution to the problem of water pollution caused by fertilizer runoff?
Answer
(B)
Planting cover crops
12
What is the primary purpose of species monitoring?
Answer
(B)
To monitor population size and health.
13
What is one of the aims of reintroduction programs?
Answer
(C)
To rebuild self-sustaining populations.
14
Which of the following activities contributes to habitat destruction?
Answer
A
B
C
15
What is the main purpose of in-vitro fertilization (IVF) in captive breeding?
Answer
(B)
To increase the success rate of producing offspring.
16
What is a key factor contributing to the loss of biodiversity?
Answer
(B)
Habitat destruction
17
What technique is used in captive breeding to fertilize the eggs?
Answer
(C)
Artificial insemination.
18
What is the primary goal of sustainable resource use?
Answer
(B)
To ensure resources are available for future generations.
19
What can excessive use of fertilizers lead to?
Answer
(B)
Eutrophication of water bodies
20
What are the purposes of conserving the species?
Answer
A
B
D
21
What is a potential impact of climate change on agriculture?
Answer
(B)
Changes in growing seasons
22
What is a primary reason for the decline of many fish stocks?
Answer
(B)
Overfishing.
23
What are the key components of captive breeding?
Answer
A
B
C
24
What is the process by which excess nutrients in water bodies lead to oxygen depletion and harm aquatic life?
Answer
(B)
Eutrophication
25
What is one of the goals of sustainable fishing practices?
Answer
(B)
To maintain healthy fish stocks.
26
What is the fundamental goal of sustainable practices?
Answer
(B)
To ensure resources are available for future generations.
27
What is the term used to describe a species whose population is so small that it is in danger of becoming extinct?
Answer
(C)
Endangered
28
Which is an example of an in-situ conservation method?
Answer
(C)
A national park.
29
What impact can the use of herbicides have?
Answer
(B)
Contamination of soil and water
30
What does intensive farming often rely upon to boost crop yields?
Answer
(C)
Synthetic fertilizers.
31
What can result from introducing a non-native species into a new ecosystem?
Answer
(C)
Competition with native species.
32
Which is a direct result of deforestation?
Answer
(B)
Loss of habitat.
33
Which of the following is NOT a characteristic of sustainable resources, as defined in the provided text?
Answer
(C)
They are typically non-renewable.
34
What is the main impact of ocean acidification?
Answer
(B)
Damage to marine organisms with calcium carbonate shells.
35
What does the term 'endangered' indicate about a species?
Answer
(B)
The species is facing a high risk of extinction.
36
What is a potential benefit of reintroducing a species into its native habitat?
Answer
(C)
Restoration of ecosystem function.
37
What is a key advantage of reintroducing a species into its native habitat?
Answer
(A)
It can enhance the ecosystem health.
38
Which of the following is an example of an artificial technique used in captive breeding?
Answer
(C)
Artificial insemination.
39
Which of the following is a direct result of habitat destruction?
Answer
(B)
Decreased genetic diversity.
40
Which of the following is a negative effect of monoculture?
Answer
(C)
Increased susceptibility to pests and diseases
41
Which of the following is an example of in-situ conservation?
Answer
(C)
A national park.
42
What is the main cause of global warming?
Answer
(C)
Human activities that release greenhouse gases
43
Which of the following is a negative consequence of using fertilizers?
Answer
(B)
Water pollution through eutrophication
44
What is a key characteristic of a threatened species?
Answer
(C)
It is likely to become endangered.
45
Which human activities are primary contributors to the release of methane into the atmosphere?
Answer
A
C
46
What does 'in-vitro fertilization' refer to in captive breeding?
Answer
(A)
Fertilizing eggs outside of the body.
47
Which of the following is an advantage of using large agricultural machines?
Answer
(A)
Reduced labor costs
48
What are the major factors affecting species from becoming endangered?
Answer
A
B
C
49
What is the role of consumer awareness campaigns in sustainable fishing practices?
Answer
(B)
To educate consumers about sustainable fishing.
50
What is a key consequence of eutrophication in aquatic ecosystems?
Answer
(D)
All of the above